“I don’t mean the ironic and disillusioned smile of my grandfather, but the triumphant smile of the person who knows that he will survive, or that at least he will be saved by what seems to be destroying him.”

We shall harness for God the energies of love, and then, for a second time in the history of the world, man will have discovered fire.

Driven by the forces of love, the fragments of the world seek each other so that the world may come to being.

The only one which can embrace the past and future of evolution and so contemplate, measure and fulfil them.

The profoundly ‘atomic’ character of the universe is visible in everyday experience, in raindrops and grains of sand, in the hosts of the living, and the multitude of stars; even in the ashes of the dead.

Religion and science are the two conjugated faces or phases of one and the same complete act of knowledge .

There are a good many points about which I may be diffident, but when it comes to questions of Truth and intellectual independence, there is no holding me – I can envisage no finer end than to sacrifice oneself for a conviction.

I feel a distaste for hunting, first because of a kind of Buddhist respect for the unity and sacredness of all life, and also because the pursuit of a hare or chamois strikes me as a kind of ‘escape of energy,’ that is, the expenditure of our effort in an illusory end, one devoid of profit.

To our critical eyes, the threads of which the past is woven are, by nature, endless and indivisible. Scientifically speaking, we cannot grasp the absolute beginning of anything: everything extends backwards to be prolonged by something else.

Religion, born of the earth’s need for the disclosing of a god, is related to and co-extensive with not the individual man, but the whole of mankind.

Everyone, no doubt, remains first and foremost a man of his own country and continues to draw from it his motive force.

Death surrenders us totally to God: it makes us enter into him; we must, in return, surrender ourselves to death with absolute love and self-abandonment since.

The problem of evil, that is to say the reconciling of our failures, even the purely physical ones, with creative goodness and creative power, will always remain one of the most disturbing mysteries of the universe for both our hearts and our minds.

If there is one thing I fear less than everything else, it is, I believe, persecution for my opinions.

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

To discover and know has always been a deep tendency of our nature. Can we not recognize it already in caveman?

The earth was probably born by accident; but, in accordance with one of the most general laws of evolution, scarcely had this accident happened than it was immediately made use of and recast into something naturally directed.