“For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.”

“Tell your son to stop trying to fill your head with science — for to fill your heart with love is enough!”

“I don't know anything, but I do know that everything is interesting if you go into it deeply enough.”

“You can recognize truth by its beauty and simplicity.”

“I can live with doubt, and uncertainty, and not knowing. I think it's much more interesting to live not knowing than to have answers which might be wrong.”

“I learned very early the difference between knowing the name of something and knowing something.”

“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.”