“Philosophy without action is the ruin of the soul. One brave deed is worth a hundred books, a thousand theories, a million words. Now as always we need heroes. And heroines! Down with the passive and the limp.”

“What we need now are heroes and heroines, about a million of them, one brave deed is worth a thousand books. Sentiment without action is the ruin of the soul.”

“I would not sacrifice a single living mesquite tree for any book ever written. One square mile of living desert is worth a hundred 'great books' - and one brave deed is worth a thousand.”

“Sentiment without action is the ruin of the soul.”

“In this way, Edwin Hubble worked out the distances to nine different galaxies. We now know that our galaxy is only one of some hundred thousand million that can be seen using modern telescopes, each galaxy itself containing some hundred thousand million stars.”

“That is what a book is: a million little things, a thousand feelings, hundreds of experiences, all melted together and sculpted into a book-shaped vessel.”