Sigmund Freud

Religion is an illusion and it derives its strength from the fact that it falls in with our instinctual desires.

It is impossible to overlook the extent to which civilization is built upon a renunciation of instinct.

The ego is not master in its own house.

Just as no one can be forced into belief, so no one can be forced into unbelief.

The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.

A man should not strive to eliminate his complexes but to get into accord with them: they are legitimately what directs his conduct in the world.

Civilization began the first time an angry person cast a word instead of a rock.

We are never so defensless against suffering as when we love.

One is very crazy when in love.

Love and work are the cornerstones of our humanness.

Being entirely honest with oneself is a good exercise.