This quote suggests that every book is, in essence, a personal message from the author to those who understand and appreciate their work. It’s comparable to sending a circular letter, a communication typically sent to a group of people with a shared interest. The author, through their writing, opens a window into their mind, sharing thoughts, ideas, and experiences. This intimate connection is formed irrespective of the time and place the reader is in.

In a broader sense, the quote implies that the act of writing is not a solitary endeavor but a form of communication, a dialogue between the writer and reader. It’s a shared journey where the author, through their words, is reaching out, connecting with those who resonate with their ideas, and creating an intellectual and emotional bond.

Applying this idea to today’s world, especially with the rise of digital media, the concept of a ‘circular-letter’ can be extended to blogs, podcasts, or social media posts. These are platforms where creators share their thoughts, ideas, and experiences with their ‘friends’ or followers, fostering a sense of community and shared understanding.

In the context of personal development, this quote can inspire us to view our own creative endeavors as ways to connect with others. Whether we’re writing a book, a blog post, or even a social media update, we’re not just expressing ourselves—we’re sending out a ‘circular-letter’ to our friends. We’re inviting them into our world, sparking conversations, and building relationships. This perspective can make the creative process less daunting and more rewarding, as we’re not just creating for ourselves, but for others who appreciate our work.