If faith cannot be reconciled with rational thinking, it has to be eliminated as an anachronistic remnant of earlier stages of culture and replaced by science dealing with facts and theories which are intelligible and can be validated.

If one is not productive in other spheres, one is not productive in the love either.

The ownership of industry by the state - that is not socialism.

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

Let your mind start a journey through a strange new world. Leave all thoughts of the world you knew before. Let your soul take you where you long to be. Close your eyes, let your spirit start to soar, and you’ll live as you’ve never lived before.

The experience of separateness arouses anxiety; it is, indeed, the source of all anxiety.

We are terribly imaginative, as far as technique in science is concerned. As far as changes in social arrangements are concerned, we lack utterly in imagination.