Love thy neighbor as thyself. Because each of us is his own neighbor.

Since the law prohibits the keeping of wild animals and I get no enjoyment from pets, I prefer to remain unmarried.

In Berlin, things are serious but not hopeless. In Vienna, they are hopeless but not serious.

An idea's birth is legitimate if one has the feeling that one is catching oneself plagiarizing oneself.

Prussia: freedom of movement with a muzzle. Austria: an isolation cell in which screaming is allowed.

So-called psychoanalysis is the occupation of lustful rationalists who trace everything in the world to sexual causes--with the exception of their occupation.

Jealousy is a dog's bark which attracts thieves.