Exclusive love is a contradiction in itself.

If there is no evidence that sport lowers aggression, at the same time it should be said that there is also no evidence that sport is motivated by aggression.

Love is an act of faith, and whoever is of little faith is also of little love.

I would say that love today is a relatively rare phenomenon, that we have a great deal of sentimentality; we have a great deal of illusion about love, namely as a... as something one falls in.

The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced -- by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.

Man's main task in life is to give birth to himself, to become what he potentially is. The most important product of his effort is his own personality.

To be loved because of one's merit, because one deserves it, always leaves doubt; maybe I did not please the person whom I want to love me, maybe this, or that - there is always a fear that love could disappear.