Although our moral conscience is a part of our consciousness, we do not feel ourselves on an equality with it. In this voice which makes itself heard only to give us orders and establish prohibitions, we cannot recognize our own voices; the very tone in which it speaks to us warns us that it expresses something within us that is not of ourselves.

One does not advance when one walks toward no goal, or - which is the same thing - when his goal is infinity.

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

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.

The first and most basic rule is to consider social facts as things.

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

We do not condemn it because it is a crime, but it is a crime because we condemn it.