"Smile, it is the key that fits the lock of everybody's heart."

"A pessimist is correct oftener than an optimist, but an optimist has more fun - and neither can stop the march of events."

"I don't hire anybody who's not brighter than I am. If they're not brighter than I am, I don't need them."

"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority."

"Trying is the first step towards failure."

"The best government rests on the people, and not on the few, on persons and not on property, on the free development of public opinion and not on authority."

"I would rather see the portrait of a dog that I know, than all the allegorical paintings they can show me in the world."

"His resolve is not to seem, but to be, the best."

"Be thankful for the least gift, so shalt thou be meant to receive greater."

"There is no nonsense so gross that society will not, at some time, make a doctrine of it and defend it with every weapon of communal stupidity."

"The safest way to double your money is to fold over once and put it in your pocket."

"Adversity is the trial of principle. Without it a man hardly knows whether he is honest or not."