If a well were sunk at our feet in the midst of the city of Norwich, the diggers would very soon find themselves at work in that white substance almo… - Thomas Henry Huxley

The students of physical science are not unfrequently told that their pursuits unfit them for the estimation of moral probability. And it may be so, for I am afraid that to those who are accustomed to severe reasoning, either in the province of Science or in that of Law, reasoning from 'moral probability' is apt to be regarded as a process of accumulating inconclusive arguments, in the hope that a great heap of them may, at least, look as firm as one good demonstration.

L’échiquier représente le monde, les pièces sont les phénomènes de l’univers, les règles du jeu sont ce qu’on appelle les lois de la nature, et le joueur de l’autre côté nous est caché.

The chessboard is the world, the pieces are the phenomena of the
Universe, the rules of the game are what we call the laws of Nature
and the player on the other side is hidden from us.