Don't let your happiness depend on something you may lose.

If happiness is activity in accordance with excellence, it is reasonable that it should be in accordance with the highest excellence.

I would maintain that thanks are the highest form of thought; and that gratitude is happiness doubled by wonder.

I am a true laborer: I earn that I eat, get that I wear, owe no man hate, envy no man’s happiness, glad of other men’s good, content with my harm.

You don’t develop courage by being happy in your relationships everyday. You develop it by surviving difficult times and challenging adversity.

Nowadays the world is becoming increasingly materialistic, and mankind is reaching toward the very zenith of external progress, driven by an insatiable desire for power and vast possessions. Yet by this vain striving for perfection in a world where everything is relative, they wander even further away from inward peace and happiness of the mind.

He who is of a calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition, youth and age are equally a burden.

Before a man can accomplish anything of an enduring nature in the world, he must first of all acquire some measure of success in the management of his own mind.

Accept – then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.

No man is born unto himself alone; who lives unto himself, he lives to none.

He that complies against his will is of his own opinion still.

It doesn't matter how smart you are unless you stop and think.

You cannot have a proud and chivalrous spirit if your conduct is mean and paltry; for whatever a man’s actions are, such must be his spirit.

Oh, I offended you with my opinion? You should hear the the ones I keep to myself.

Never trouble another for what you can do for yourself.