Where does a thought go when it's forgotten?

If you want your wife to listen to you, then talk to another woman; she will be all ears.

What progress we are making. In the Middle Ages they would have burned me. Now they are content with burning my books.

Neurosis is the inability to tolerate ambiguity.

We should picture the instrument that carries our mental functioning as resembling a compound microscope or photographic apparatus.

In mourning it is the world which has become poor and empty; in melancholia it is the ego itself.

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