I am working through a book "Artist's Rule" by Christine Paintner Valtner. She talks about a Buddhist concept of "Wabi-sabi" which means beauty as humility, seeing an aesthetic of poverty, loneliness and imperfection. I like how that fits with Zentangle, We create our art for ourselves. And they are never perfect. They are simply beautiful.
So too is much of nature. Perfection in imperfection. Here is a beautiful picture from the summer of the uneven water edge.
p.s. Thank you for your comments. It is wonderful to hear from people from all over the world.