It is a mark of a mean capacity to spend much time on the things which concern the body, such as much exercise, much eating, much drinking, much easing of the body, much copulation. But these things should be done as subordinate things: and let all your care be directed to the mind.

Happiness and freedom begin with a clear understanding of one principle: Some things are within our control, and some things are not. It is only after you have faced up to this fundamental rule and learned to distinguish between what you can and can't control that inner tranquility and outer effectiveness become possible.

Unremarkable lives are marked by the fear of not looking capable when trying something new.

No matter what happens, it is within my power to turn it to my advantage.

Any person capable of angering you becomes your master; he can anger you only when you permit yourself to be disturbed by him.

Seek to be the purple thread in the long white gown.

We cannot choose our external circumstances, but we can always choose how we respond to them.