"Nature of course is the best guide in the matter of choosing a pursuit"

"A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves"

"The art of medicine consists in amusing the patient while nature cures the disease"

"Youth is the best time to be rich, and the best time to be poor"

"Do what you do best, and you will succeed"

"Sex is a part of nature. I go along with nature"

"Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality"

"The best mirror is an old friend"

"The best preparation for good work tomorrow is to do good work today"

"The best way to predict the future is to create it"

"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"