The dog knows, but does not know that he knows.

The stars are laboratories in which the evolution of matter proceeds in the direction of large molecules.

The human person is the sum total of a 15 billion year chain of unbroken evolution now thinking about itself

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?

The world is round so that friendship may encircle it.

The more we split and pulverise matter artificially, the more insistently it proclaims its fundamental unity.

Everything that rises must converge.