Don't limp in front of the lame.

I urge you to spend your youth profitably in study and virtue.... In brief, let me see in you an abyss of knowledge.

Science sans conscience n' est que le ruine de l'âme. Knowledge without conscience is but the ruine of the soule.

If you want to avoid seeing an idiot, break the mirror.

How shall I be able to rule over others, that have not full power and command of myself?

Remove idleness from the world and soon the arts of Cupid would perish.

Few and signally blessed are those whom Jupiter has destined to be cabbage-planters. For they've always one foot on the ground andthe other not far from it. Anyone is welcome to argue about felicity and supreme happiness. But the man who plants cabbages I now positively declare to be the happiest of mortals.