Immature love says: 'I love you because I need you.' Mature love says 'I need you because I love you.'

To love somebody is not just a strong feeling - it is a decision, it is a judgment, it is a promise.

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

Ideas become powerful only if they appear in the flesh; an idea which does not lead to action by the individual and by groups remains at best a paragraph or a footnote in a book.

The customer is an object to be manipulated, not a concrete person whose aims the businessman is interested to satisfy.

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

The only way of full knowledge lies in the act of love; this act transcends thought, it transcends words. It is the daring plunge into the experience of union. To love somebody is not just a strong feeling-it is a decision, it is a judgment, it is a promise.