“A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.”

Manners are good when one may have to back up his acts with his life.

Theology is never any help; it is searching in a dark cellar at midnight for a black cat that isn’t there.

It’s an indulgence to sit in a room and discuss your beliefs as if they were a juicy piece of gossip.

One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.

The universe never did make sense; I suspect it was built on government contract.

When a place gets crowded enough to require ID’s, social collapse is not far away. It is time to go elsewhere.

Yield to temptation. It may not pass your way again.

Theologians can persuade themselves of anything.

Everything is theoretically impossible, until it is done.

I am free because I know that I alone am morally responsible for everything I do.

There is no way that writers can be tamed and rendered civilized or even cured.

The best thing about space travel is that it made it possible to go elsewhere.

They didn’t want it good, they wanted it Wednesday.

Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy.

Never worry about theory as long as the machinery does what it’s supposed to do.

A society that gets rid of all its troublemakers goes downhill.

We’re all competent in different ways, we’ve just got to find a way to push ourselves up more.

There’s this really awesome theory of human motivation – that human beings all want three things. One is to be competent, one is to belong, and one is be free, as in to have choice: to not be told what to do but to choose what to do.

A competent and self-confident person is incapable of jealousy in anything.

Hope is such an important component to moving forward and getting past the difficult times.

As a woman of color, I always have to be at 150 percent and better than everybody in the room to be considered competent.

To handle the economy and services in a country like Iraq requires delegation of authority and the choice of competent people.