This Marxian sentence, repeated to the point of boredom, is misinterpreted. In reality [Karl] Marx was a "religious" man.

For [Sigmund ] Freud, the manifest dream, that is that which we remember after waking,is like a code message, that can be interpreted, provided the right key is avail-able, for example the method of free association.

Happiness does not exclude sadness - if a person responds to life, he's sometimes happy and sometimes sad. What matters is he responds.

The manual worker does not have to sell his personality. He doesn't have to sell his smile.

Not he who has much is rich, but he who gives much.

Fairness means not to use fraud and trickery in the exchange of commodities and services and the exchange of feelings.

I shall become a master in this art only after a great deal of practice.