I did this logo based on my practice in Zen Calligraphy. Read The Radical Humanitarian‘s® message about its meaning:
Our logo. Did you know? Did you know that our logo was designed specifically for TRH by Artbillrohs? “Ensō (circle) is a sacred symbol in the Zen school of Buddhism and is one of the most common subjects of Japanese calligraphy, even though it is a symbol and not a character. You may hear it called the Circle of Enlightenment, the Infinity Circle and even the Lost Symbol of Reiki.”
So why use it for The Radical Humanitarian®? “If you actually took the meanings of the two Kanji symbols that make up the word, ensō would translate as Mutual Circle or Circle of Togetherness.”
“At first glance the ancient ensō symbol appears to be nothing more than a miss-shaped circle
but its symbolism refers to the beginning and end of all things,
the circle of life and the connectedness of existence.
It can symbolize emptiness or fullness, presence or absence….
This is a Zen symbol of the absolute, the true nature of existence, the duality within life and the imperfection of all things. It is a symbol that combines the visible and the hidden, the simple and the profound, the empty and the full. The very imperfections and contours of the ensō, which must be painted by human hand rather than constructed as a mathematically correct circle, make the ensō a manifestation of perfection. It is perfect just as it is, even in all its imperfection. Ensō suggests to the student to stop striving for perfection and allow the universe to be as it is. Abandon the idea that there is a one size fits all path that ends at some specific point, place or time.
When you believe that you have arrived at some final destination on your path,
ensō reminds you to start again exactly at the point where you are now
and to embrace and enjoy your unique experiences on life’s journey.”
Thus the foundations of truly being a Radical Humanitarian®.
(above quoted from ModernZen.org)