The Age of Nations is past. The task before us now, if we would not perish, is to build the Earth.

The phrase 'Sense of the Earth' should be understood to mean the passionate concern for our common destiny which draws the thinking part of life ever further onward. The only truly natural and real human unity is the spirit of the Earth. . . .The sense of Earth is the irresistable pressure which will come at the right moment to unite them (humankind) in a common passion.The Age of Nations is past. The task before us now, if we would not perish, is to build the Earth.

You are not a human being in search of a spiritual experience. You are a spiritual being immersed in a human experience.

The most satisfying thing in life is to have been able to give a large part of one's self to others.

To love is to approach each other center to center.

A universal love is not only psychologically possible; it is the only complete and final way in which we are able to love.

That there is an evolution of one sort or another is now common ground among scientists. Whether or not that evolution is directed is another question.