Mistakes are their own instructors

Misfortunes, untoward events, lay open, disclose the skill of a general, while success conceals his weakness, his weak points.

As a neighboring funeral terrifies sick misers, and fear obliges them to have some regard for themselves; so, the disgrace of others will often deter tender minds from vice.

He tosses aside his paint-pots and his words a foot and a half long.

He has hay upon his horn. [He is a mischievous person.]

Pleasure bought with pain does harm.

Enjoy in happiness the pleasures which each hour brings with it.