"Crocodiles are easy. They try to kill and eat you. People are harder. Sometimes they pretend to be your friend first."

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Obstacles are like wild animals. They are cowards but they will bluff you if they can. If they see you are afraid of them... they are liable to spring upon you; but if you look them squarely in the eye, they will slink out of sight.

— Orison Swett Marden