The only way forward is in the direction of a common passion, for nothing in the universe can ultimately resist the cumulative ardor of the collective soul.

To write the true natural history of the world, we should need to be able to follow it from within. It would thus appear no longer as an interlocking succession of structural types replacing one another, but as an ascension of inner sap spreading out in a forest of consolidated instincts. Right at its base, the living world is constituted by conscious clothes in flesh and bone.

The day is not far distant when humanity will realize that biologically it is faced with a choice between suicide and adoration.

Let us keep the discoveries and indisputable measurements of physics. But ... A more complete study of the movements of the world will oblige us, little by little, to turn it upside down; in other words, to discover that if things hold and hold together, it is only by reason of complexity, from above.

Individual human beings are so subtly developed through the centuries that it is strictly impermissible to compare any two men who are not contemporaries-that is to say are taken from two quite different times.

When humans truly discover the power of love, it will prove more important than the harnessing of fire.

Humanity has been sleeping-and still sleeps-lulled within the narrowly confining joys of its little closed loves. In the depths of the human multitude there slumbers an immense spiritual power which will manifest itself only when we have learnt how to break through the dividing walls of our egoism and raise ourselves up to an entirely new perspective, so that habitually and in a practical fashion we fix our gaze on the universal realities.