The duty to be alive is the same as the duty to become oneself, to develop into the individual one potentially is.

The successful revolutionary is a statesman, the unsuccessful one a criminal.

Care and responsibility are constituent elements of love, but without respect for and knowledge of the beloved person, love deteriorates into domination and possessiveness.

Man does not only sell commodities, he sells himself and feels himself to be a commodity.

One cannot fall in love, really; one has to be in love.

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

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