"God does not play dice with the universe."

P(A|B) = P(B|A) · P(A) / P(B)

"The most important questions of life are indeed, for the most part, really only problems of probability."

E[X] = ∑ x·P(x)

"Probability is expectation founded upon partial knowledge."

σ² = E[(X-μ)²]

"In the long run, we are all dead."

lim n→∞ S_n/n = μ