A good conscience is to the soul what health is to the body; it preserves constant ease and serenity within us; and more than countervails all the calamities and afflictions which can befall us from without.
Mirth is like a flash of lightning, that breaks through a gloom of clouds, and glitters for a moment; cheerfulness keeps up a kind of daylight in the mind, and fills it with a steady and perpetual serenity.