The time has come to realise that an interpretation of the universe—even a positivist one—remains unsatisfying unless it covers the interior as well as the exterior of things; mind as well as matter. The true physics is that which will, one day, achieve the inclusion of man in his wholeness in a coherent picture of the world.

Love is the most universal, the most tremendous and the most mysterious of the cosmic forces.

Everything that rises must converge.

Man only progresses by slowly elaborating from age to age the essence and the totality of a universe deposited within him.

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.

It is not our heads or our bodies which we must bring together, but our hearts. . . . Humanity. . . is building its composite brain beneath our eyes. May it not be that tomorrow, through the logical and biological deepening of the movement drawing it together, it will find its heart, without which the ultimate wholeness of its power of unification can never be achieved?

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.