Is evolution a theory, a system, or a hypothesis? It is much more it is a general postulate to which all theories, all hypotheses, all systems must henceforward bow and which they must satisfy in order to be thinkable and true. Evolution is a light which illuminates all facts, a trajectory which all lines of thought must follow this is what evolution is.

Love alone is capable of uniting living beings in such a way as to complete and fulfill them, for it alone takes them and joins them by what is deepest in themselves.

The future is in the hands of those who can give tomorrow's generations valid reasons to live and hope.

By means of all created things, without excaption, the divine assails us, penetrates us, and molds us. We imagined it as distant and inaccessible, when in fact we live steeped in its burning layers

He recognized with absolute certainty the empty fragility of even the noblest theorizings as compared with the definitive plenitude of the smallest fact grasped in its total, concrete reality.

My starting point is the fundamental initial fact that each one of us is perforce linked by all the material organic and psychic strands of his being to all that surrounds him. . . . If we look far enough back in the depths of time, the disordered anthill of living beings suddenly, for an informed observer, arranges itself in long files that make their way by various paths towards greater consciousness.

To love is to approach each other center to center.