“Truth gains more even by the errors of one who, with due study and preparation, thinks for himself, than by the true opinions of those who only hold them because they do not suffer themselves to think.”

“Those only are happy who have their minds fixed on some object other than their own happiness; on the happiness of others, on the improvement of mankind, even on some art or pursuit, followed not as a means, but as itself an ideal end. Aiming thus at something else, they find happiness by the way.”

“Ask yourself whether you are happy, and you cease to be so.”

“Stupidity is much the same all the world over.”

“It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied.”

“One person with a belief is a social power equal to ninety-nine who have only interests.”

“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.”