Axioms are delightful in theory, but impossible in practice.

The methods that help a man acquire a fortune are the very ones that keep him from enjoying it.

Opinions, theories, and systems pass by turns over the grindstone of time, which at first gives them brilliancy and sharpness, but finally wears them out.

Ideas are a capital that bears interest only in the hands of talent.

Wrong is wrong; no fallacy can hide it, no subterfuge cover it so shrewdly but that the All-Seeing One will discover and punish it.

It is, no doubt, an immense advantage to have done nothing, but one should not abuse it.

Oblivion is the rule and fame the exception, of humanity.