“If I hold my head to the left and look down at the handle grips and front wheel and map carrier and gas tank I get one pattern of sense data. If I move my head to the right I get another slightly different pattern of sense data. The two views are different. The angles of the planes and curves of the metal are different. The sunlight strikes them differently. If there's no logical basis for substance then there's no logical basis for concluding that what's produced these two views is the same motorcycle.”

“What’s emerging from the pattern of my own life is the for belief that the crisis is being caused by the inadequacy of existing forms of thought to cope with the situation. It can’t be solved by rational means because the rationality itself is the source of the problem. The only ones who’re solving it are solving it at a personal level by abandoning ‘square’ rationality altogether and going by feelings alone. Like John and Sylvia here. And millions of others like them. And that seems like a wrong direction too. So I guess what I’m trying to say is that the solution to the problem isn’t that you abandon rationality but that you expand the nature of rationality so that it’s capable of coming up with a solution.”

“To live for some future goal is shallow. It's the sides of the mountain that sustain life, not the top.”

“Even in the presence of others he was completely alone.”

“If you run from technology, it will chase you.”

“The study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself. Working on a motorcycle, working well, caring, is to become part of a process, to achieve an inner peace of mind. The motorcycle is primarily a mental phenomenon.”

“Boredom always precedes a period of great creativity.”

“Traditional scientific method has always been at the very best, 20 - 20 hindsight. It's good for seeing where you've been. It's good for testing the truth of what you think you know, but it can't tell you where you ought to go.”

“Quality is a direct experience independent of and prior to intellectual abstractions.”

“We do need a return to individual integrity, self-reliance, and old-fashioned gumption. We really do.”

“The place to improve the world is first in one's own heart and head and hands.”