“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.”

“If you think you can do a thing or think you can’t do a thing, you’re right.”

“Thinking is the hardest work there is, which is probably the reason why so few engage in it.”

“When everything seems to be going against you, remember that the airplane takes off against the wind, not with it.”

“Nothing is particularly hard if you divide it into small jobs.”

“If I had asked them what they had wanted, they would have said a faster horse.”