For [Karl] Marx it is socialist society which realizes "concretely" the religious principles of equality, brotherly love, and freedom.

I would say love is something everybody talks about, and the need for love is one of the most basic needs of man, namely the experience of union with another being - of becoming one with another being.

I have a tremendous faith in the possibilities of man, which have shown in his past, and I believe if we avoid war, we shall be able to revive our real vision of life, but that we must see it, and therefore, that we must be critical to where we are.

Is love an art? Then it requires knowledge and effort.

Love is the only sane and satisfactory answer to the problem of human existence.

That millions of people share the same forms of mental pathology does not make these people sane.

Faith is not a weak form of belief or knowledge; it is not faith in this or that; faith is the conviction about the not yet proven, the knowledge of the real possibility, the awareness of pregnancy.