“Everything has been said, and we have come too late, now that men have been living and thinking for seven thousand years and more
“Those who would administer wisely must, indeed, be wise, for one of the serious obstacles to the improvement of our race is indiscriminate charity
“A single hour a day, steadily given to the study of some interesting subject, brings unexpected accumulations of knowledge
“The only means of strengthening one's intellect is to make up one's mind about nothing , to let the mind be a thoroughfare for all thoughts, not a select party
“Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom.
“It is by the fortune of God that, in this country, we have three benefits: freedom of speech, freedom of thought, and the wisdom never to use either.
“Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young
“A fool often fails because he thinks what is difficult is easy, a wise man because he thinks what is easy is difficult
“Animals, in their generation, are wiser than the sons of men; but their wisdom is confined to a few particulars, and lies in a very narrow compass
“If you wish to succeed in life, make perseverance your bosom friend, experience your wise counselor, caution your elder brother, and hope your guardian genius
“I will give you a definition of a proud man: he is a man who has neither vanity nor wisdom, one filled with hatreds cannot be vain, neither can he be wise
“An education which does not cultivate the will is an education that depraves the mind. An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you know and what you don't
“It is no little wisdom for you to keep yourself in silence and in good peace when evil words are spoken to you, and to turn your heart to God and not to be troubled with the judgment of others