“Absence of evidence is not evidence of absence.”

“Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.”

“We live in a society absolutely dependent on science and technology and yet have cleverly arranged things so that almost no one understands science and technology. That's a clear prescription for disaster.”

“For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.”

“The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what's true.”

“We're made of star-stuff. We are a way for the cosmos to know itself.”

“Geometry was invented that we might expeditiously avoid, by drawing Lines, the Tediousness of Computation.”

“I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses; for whatever is not deduced from the phenomena is to be called a hypothesis, and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.”

“Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.”

“There is a fundamental difference between religion, which is based on authority and science, which is based on observation and reason. Science will win, because it works.”

“My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.”

“See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.”