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

“God created everything by number, weight and measure.”

“But if I have done the public any service this way, 'tis due to nothing but industry and a patient thought.”

“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.”

“I keep the subject constantly before me, and wait 'till the first dawnings open slowly, by little and little, into a full and clear light.”

“Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.”

“Our new Constitution is now established, and has an appearance that promises permanency; but in this world nothing can be said to be certain, except death and taxes.”

“When in doubt, tell the truth.”

“The old believe everything; the middle-aged suspect everything; the young know everything.”

“Men marry because they are tired; women because they are curious. Both are disappointed.”

“I have no idea. People who boast about their IQ are losers.”

“Life would be tragic if it weren't funny.”