To diminish envy, let us consider not what others possess, but what they enjoy; mere riches may be the gift of lucky accident or blind chance, but happiness must be the result of prudent preference and rational design; the highest happiness then can have no other foundation than the deepest wisdom; and the happiest fool is only as happy as he knows how to be.

Remarks on the Talents of Lord Byron and the Tendencies of Don Juan (ed. 1823)