Nature seems at each man's birth to have marked out the bounds of his virtues and vices, and to have determined how good or how wicked that man shall be capable of being.
Francois de La RochefoucauldVices are ingredients of virtues just as poisons are ingredients of remedies. Prudence mixes and tempers them and uses them effectively against life's ills.
Francois de La Rochefoucauld