“My dear friend, clear your mind of cant [excessive thought]. You may talk as other people do: you may say to a man, "Sir, I am your most humble servant." You are not his most humble servant. You may say, "These are bad times; it is a melancholy thing to be reserved to such times." You don't mind the times ... You may talk in this manner; it is a mode of talking in Society; but don't think foolishly.”

“And in my classes, I will talk most of the time, and you will listen most of the time. Because you may be smart, but I've been smart longer.”

“A fly, Sir, may sting a stately horse and make him wince; but one is but an insect, and the other is a horse still.”

“Positive energy is your priceless life force. Protect it. Don't allow people to draw from your reserves; select friends who recharge your energies . . . I'm not asking you to cut people out of your life, but I am asking you to invest your time with people who will push you to be your best. Winners love to see other people win.”

“Sir, I did not count your glasses of wine, why should you number up my cups of tea?”

“Perhaps the excellence of aphorisms consists not so much in the expression of some rare or abstruse sentiment, as in the comprehension of some obvious and useful truth in a few words.We frequently fall into error and folly, not because the true principles of action are not known, but because, for a time, they are not remembered; and he may therefore be justly numbered among the benefactors of mankind who contracts the great rules of life into short sentences, that may be easily impressed on the memory, and taught by frequent recollection to recur habitually to the mind.”

“People have now a-days, (said he,) got a strange opinion that every thing should be taught by lectures. Now, I cannot see that lectures can do so much good as reading the books from which the lectures are taken. I know nothing that can be best taught by lectures, except where experiments are to be shewn. You may teach chymistry by lectures.—You might teach making of shoes by lectures!”