“The only thing that keeps a man going is energy. And what is energy but liking life?”

“The land of easy mathematics where he who works adds up and he who retires subtracts.”

“At the age of 45, most days in Tucson were spent feeling like I was on the summit of Mauna Kea, as I was exhibiting debilitating health symptoms that corresponded to what I saw at very high altitud...”

“The hour is only long thus, if you've waited.”

“Only once in your life, I truly believe, you find someone who can completely turn your world around. You tell them things that youve never shared with another soul and they absorb everything you sa...”

“As he read, I fell in love the way you fall asleep: slowly, and then all at once.”

“I love you without knowing how, or when, or from where. I love you simply, without problems or pride: I love you in this way because I do not know any other way of loving but this, in which there i...”

“Hard work is a prison sentence only if it does not have meaning.”

“I knew right then that I wanted to be a part of something that meaningful. I wanted to have something I was so passionate about that I'd be willing to risk everything for it. I wanted to know that ...”

“Do it with passion or not at all.”