Man can be conditioned to behave in almost every desired way; but only "almost.

I think if you ask what people really mean by happiness today, it is the experience of unlimited consumption - the kind of thing Mr. Huxley described in "Brave New World."

Who will tell whether one happy moment of love or the joy of breathing or walking on a bright morning and smelling the fresh air, is not worth all the suffering and effort which life implies.

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.

Human history began as an act of disobedience, and it is not unlikely that it will be terminated by an act of obedience. At this point in history the capacity to doubt, to criticize and to disobey may be all that stands between a future for mankind and the end of civilization.

There is only one reality: the act of feeling ourselves in the process of making choices.