Sadism is all right in its place, but it should be directed to proper ends.

I think that in general it is a good plan occasionally to bear in mind the fact that people were in the habit of dreaming before there was such a thing as psychoanalysis.

Religious doctrines … are all illusions, they do not admit of proof, and no one can be compelled to consider them as true or to believe in them.

The ego represents what we call reason and sanity, in contrast to the id which contains the passions.

Tobacco is the only excuse for Columbus's misadventure in discovering America.

A poor girl may have an illusion that a prince will come and fetch her home. It is possible, some such cases have occurred. That the Messiah will come and found a golden age is much less probable.

But the repressed merges into the id as well, and is merely a part of it. The repressed is only cut off sharply from the ego by the resistances of repression; it can communicate with the ego through the id.