Probability theory is nothing but common sense reduced to calculation.

All the effects of Nature are only the mathematical consequences of a small number of immutable laws.

Probability theory is nothing but common sense reduced to calculation.

Do you believe in god? I have no need for that hypothesis, he may be around though.

However, the small probability of a similar encounter [of the earth with a comet], can become very great in adding up over a huge sequence of centuries. It is easy to picture to oneself the effects of this impact upon the Earth. The axis and the motion of rotation changed; the seas abandoning their old position to throw themselves toward the new equator; a large part of men and animals drowned in this universal deluge, or destroyed by the violent tremor imparted to the terrestrial globe.

The theory of probabilities is at bottom nothing but common sense reduced to calculus; it enables us to appreciate with exactness that which accurate minds feel with a sort of instinct for which of times they are unable to account.

What we know is not much. What we do not know is immense.