Even one well-made observation will be enough in many cases, just as one well-constructed experiment often suffices for the establishment of a law.

Each new generation is reared by its predecessor; the latter must therefore improve in order to improve its successor. The movement is circular.

When mores are sufficient, laws are unnecessary. When mores are insufficient, laws are unenforceable.

Our whole social environment seems to us to be filled with forces which really exist only in our own minds.

A mind that questions everything, unless strong enough to bear the weight of its ignorance, risks questioning itself and being engulfed in doubt.

Man is a moral being, only because he lives in society. Let all social life disappear and morality will disappear with it.

When man discovered the mirror, he began to lose his soul.

When morals are sufficient, law is unnecessary; when morals are insufficient, law is unenforceable.

If religion has given birth to all that is essential in society, it is because the idea of society is the soul of religion.

To pursue a goal which is by definition unattainable is to condemn oneself to a state of perpetual unhappiness.

The totality of beliefs and sentiments common to the average members of a society forms a determinate system with a life of its own. It can be termed the collective or creative consciousness.

The happiest person is the person who thinks the most interesting thoughts.

We are always paid for our suspicion by finding what we suspect.

Listeners instinctively detect that when we lower the usual pitch of our voice, we are sad, and when we raise it, we are angry or fearful.

If everyone likes you, it probably means you aren't saying much.

All flesh doth frailty breed!

When we make a pledge, we mean it. We keep our word, and what we begin, we will finish.

People talk about songwriting or comedy as creative expression, but life is creative expression. Table-making, even nursing, is extraordinarily creative.

The Book of Mormon is so good it makes me f**king angry.

Lying to the American people wasn’t part of my job description.

I have a kitten,the drollest of all creatures that ever wore a cat's skin.