“Oh, Diamond! Diamond! thou little knowest what mischief thou hast done!”

“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.”

“Happiness is the final and perfect fruit of obedience to the laws of life.”

“The highest result of education is tolerance.”

“Example is the best lesson there is.”

“Only a man's character is the real criterion of worth.”

“It isn't enough to talk about peace. One must believe in it. And it isn't enough to believe in it. One must work at it.”

“In the long run, we shape our lives and we shape ourselves. The process never ends until we die. And the choices we make are ultimately our own responsibility.”