“No is easier to do. Yes is easier to say.”

Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.

Don't wait. The time will never be just right.

I am always doing that which I cannot do, in order that I may learn how to do it.

Those who try to do something and fail are infinitely better than those who try nothing and succeed.

It is surprising what a man can do when he has to, and how little most men will do when they don't have to.

People who say it cannot be done should not interrupt those who are doing it.