Unlock the Power of Commonplace Books: A Modern Approach to an Ancient Tool
In an age of information overload, finding a way to capture, organize, and reflect on the knowledge we encounter daily can be daunting. Enter the commonplace book, an ancient tool that’s been used by great thinkers for centuries to collect and organize their thoughts, ideas, and insights. In this article, we’ll explore the history of commonplace books, discuss their benefits, and outline a modern approach to creating your own, complete with examples and practical tips.
What Are Commonplace Books and Their Historical Significance?

Commonplace books have their roots in ancient Greece and Rome, where philosophers, scholars, and writers collected and organized quotations, observations, and ideas in personal notebooks. These notebooks were called “commonplace books” because they contained a “common place” for the knowledge and wisdom gathered from various sources.
Throughout history, notable figures such as Leonardo da Vinci, Thomas Jefferson, and Isaac Newton maintained commonplace books, using them as a repository for their thoughts, discoveries, and ideas. Today, commonplace books have evolved to accommodate modern technology and lifestyles but still serve the same fundamental purpose: to capture, organize, and reflect on the knowledge and insights we encounter.
Benefits of Keeping a Commonplace Book
Knowledge retention: Recording information in a commonplace book helps solidify your understanding of concepts and ideas, making recalling them easier. For example, Ryan Holiday’s notecard system: Author and entrepreneur Ryan Holiday uses a physical notecard system to organize his reading notes, creating a vast and interconnected library of ideas that inform his writing and thinking. Read more about his system here
Idea generation: By capturing and organizing ideas, you create a resource that can inspire new thoughts and connections between seemingly unrelated topics. Maria Popova’s “Brain Pickings”: Maria Popova, the creator of the popular blog “Brain Pickings,” has been keeping a digital commonplace book for over a decade. Her curated collection of ideas, quotes, and insights has become a valuable resource for readers worldwide. Explore her digital commonplace book here.
Personal growth: Regularly reviewing and reflecting on your commonplace book can help you identify patterns, track intellectual development, and gain insights into your interests and passions. An example of a personal growth commonplace book is “The Five Minute Journal” by Alex Ikonn and UJ Ramdas. The Five Minute Journal is designed to help individuals focus on gratitude, personal growth, and self-reflection. You can find more information about The Five Minute Journal and how it can be used as a personal growth commonplace book on their website: The Five Minute Journal
Creative expression: Commonplace books can also serve as a space for artistic exploration, allowing you to doodle, sketch, or write poetry alongside your collected knowledge. For example, see Austin Kleon’s visual commonplace book: Artist and writer Austin Kleon combines written notes, sketches, and collages to create a unique visual commonplace book. Learn more about his approach and see examples of his work here.
How to Create a Modern Commonplace Book
1. Choose a Format: Physical or Digital
There is no “right” way to create a commonplace book; your chosen format largely depends on your preferences and lifestyle. For example, some people prefer traditional paper notebooks, while others opt for digital tools like Evernote, Notion, Obsidian, or Roam Research. Consider the advantages and drawbacks of each format, and choose the one that best suits your needs.
2. Organize and Categorize Your Content
To make your commonplace book as helpful as possible, creating a system for organizing and categorizing your content is essential. This can be as simple as dividing your book into sections based on themes or subjects or as complex as creating a multi-level hierarchy of tags and categories.
3. Develop a System for Adding New Entries
One key to maintaining a compelling commonplace book is establishing a routine for adding new entries. This can be as simple as setting aside time each day or week to record your thoughts and reflections or as structured as using prompts or templates to guide your writing.
4. Regularly Review and Reflect on Your Collection
To truly unlock the power of your commonplace book, it’s essential to regularly review and reflect on your collection. Set aside time to revisit old entries, make connections between ideas, and consider how your thinking has evolved over time.
Example – Create a Commonplace book for AI Prompts
Creating a commonplace book dedicated to AI prompts can be an excellent way to organize and track your favorite prompts, ideas, and insights. Here’s a step-by-step example using Notion as the platform:
- Choose a format: digital. For an AI prompts commonplace book, a digital format is more suitable due to the need for quick access, searchability, and ease of editing. In this example, we’ll use Notion.
- Organize and categorize your content. Create a new page in Notion titled “AI Prompts Commonplace Book.” Set up sections or categories within this page to sort your content effectively. For example, you could use categories like “Creative Writing Prompts,” “Business Ideas,” “Personal Development,” and “Fun & Entertainment.”
- You can also add several AI-related meta categories, such as:
- AI-generated prompts repository: Create a section dedicated to AI-generated writing prompts, challenges, or questions. By storing and categorizing these prompts, you can access them whenever you need inspiration for a creative writing project, brainstorming session, or problem-solving activity.
- Personal AI assistant interactions: Document meaningful interactions or conversations you’ve had with AI personal assistants like Siri, Alexa, or Google Assistant. These can serve as valuable examples for understanding the capabilities and limitations of AI technology and inspire ideas for future AI applications.
- AI in the news: Collect articles, reports, and stories about AI breakthroughs, ethical discussions, and industry trends. This will help you stay informed about the latest developments in AI and provide a resource for understanding the broader implications of AI technology.
- AI-related quotes and excerpts: Gather thought-provoking quotes, passages, or extracts from books, articles, interviews, or talks related to AI. These can serve as conversation starters or provide unique perspectives on the AI landscape.
- AI experiments and case studies: Document your own AI experiments or case studies where you’ve used AI tools or services to solve a problem, optimize a process, or generate creative output. Reflect on the outcomes, lessons learned, and potential improvements for future projects.
- AI tools and resources: Compile a list of AI tools, services, and resources you’ve discovered or used. This can include APIs, platforms, libraries, or educational resources, which could be helpful for future projects or learning opportunities.
- AI ethics and philosophy: Dedicate a section to exploring AI’s ethical considerations and philosophical implications. Collect articles, essays, and discussions on AI consciousness, the impact on the workforce, or the potential consequences of artificial general intelligence.
- You can also add several AI-related meta categories, such as:
- Develop a system for adding new entries. For each category, create a template for adding new entries. In the template, include fields for the prompt question, AI-generated response, your thoughts or reflections on the answer, any edits or improvements you made, and the date. This will help you keep track of each AI prompt and the insights it generates.
- Create a habit of regular updates. Set aside time each week or month to add new AI prompts to your commonplace book. This will help ensure that your collection remains up-to-date and continues to grow. Consider setting a recurring reminder in your calendar or task manager to stay on track.
- Regularly review and reflect on your collection. Schedule time every month or quarter to review your AI prompts commonplace book. Use this time to analyze your gathered content, identify patterns or trends, and reflect on the ideas and insights generated. Then, consider how you can apply these learnings to your personal or professional life.
- Expand and refine your categories as needed. As you continue to add entries to your AI prompts commonplace book, you may need to create new categories or adjust existing ones to suit your evolving interests and needs. Periodically review your organizational structure and make any necessary changes to ensure that your commonplace book remains an effective and valuable resource.
In our fast-paced, information-saturated world, keeping a commonplace book can be a powerful way to capture, organize, and reflect on the knowledge and ideas we encounter daily. By adopting this ancient tool to fit our modern lifestyles, we can unlock its full potential and reap the benefits of improved knowledge retention, idea generation, personal growth, and creative expression.
Whether you choose a physical notebook or a digital platform, the key to a successful commonplace book is to find a system that works for you and to commit to regularly adding new entries and reflecting on your collection. As you embark on this journey, you’ll not only be following in the footsteps of some of history’s greatest thinkers but also building a valuable resource that will serve you well for years to come.
