The source of the greatest errors is to be found in those moves that are made merely according to rule and not based on the individual plan or thought of the player.

Proof is the idol before whom the pure mathematician tortures himself.

The generation of random numbers is too important to be left to chance.

Beware of testing too many hypotheses; the more you torture the data, the more likely they are to confess, but confession obtained under duress may not be admissible in the court of scientific opinion.

As a language, R is like French; it has an elegant core, but every rule comes with a set of ad-hoc exceptions that directly contradict it.