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.
Your Highness, I have no need of this hypothesis.
I have lived long enough to know what I did not at one time believe--that no society can be upheld in happiness and honor without the sentiment of religion.
What we know is not much. What we don't know is enormous.
The weight of evidence for an extraordinary claim must be proportioned to its strangeness.