Knowing others is intelligence; knowing yourself is true wisdom. Mastering others is strength; mastering yourself is true power. If you realize that you have enough, you are truly rich. — Lao Tzu
知人者智,自知者明。胜人者有力,自胜者强。知足者富,强行者有志。不失其所者久,死而不亡者寿。— 老子

Early to bed and early to rise, makes a man healthy, wealthy, and wise. — Benjamin Franklin

Knowledge, he realized, “was obtained rather by the use of the ear than of the tongue.” — Walter Isaacson, Benjamin Franklin: An American Life

Be studious in your profession, and you will be learned. Be industrious and frugal, and you will be rich. Be sober and temperate, and you will be healthy. Be in general virtuous, and you will be happy. At least you will, by such conduct, stand the be. ― Benjamin Franklin

Nothing in the world is worth having or worth doing unless it means effort, pain, difficulty… I have never in my life envied a human being who led an easy life. I have envied a great many people who led difficult lives and led them well. ― Theodore Roosevelt