I have loved this book since I was a child and found it on my mother's shelf. John Chang McCurdy's images next to the Taoist poetry selections by Marc Lappé always moved me and showed me how much I resonate with the philosophies they each express.
The title is from a poem from Chapter 43 of the Tao Te Ching:
What is of all things most yielding can overcome that which is most hard, being substanceless, it can enter in
even where there is no crevice. That is how I know the value of action which is actionless. But that there can be teaching without words, value in action which is actionless few indeed can understand.