“Any experiment that can benefit by one hairsbreadth any single human life is a thousand times worth trying.”

“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.”

“One single day of devotion is worth more than a thousand years of worldly life.”

“The truth, he thought, has never been of any real value to any human being - it is a symbol for mathematicians and philosophers to pursue. In human relations kindness and lies are worth a thousand truths.”

“Any explanation or logic that explains everything so easily has a hidden trap in it. I'm speaking from experience. Somebody once said if it's something a single book can explain, it's not worth having explained. What I mean is don't leap to any conclusions.”

“Everyone with any sense and experience in life would rather take his fellows one by one than in a crowd. Crowds are noisy, unreasonable and impatient. They can trample you easier than a single person can. And a crowd will never buy you lunch.”