Confide not in the firmness of your principles, or the steadfastness of your integrity. Be always vigilant and fearful. Never think you have enough of knowledge, and let not your caution slumber for a moment, for you know not when danger is near.

How slender is the accommodation which nature has provided for man.

I used to suppose that certain evils could never befall a being in possession of a sound mind that true virtue supplies us with energy which vice can never resist that it was always in our power to obstruct, by his own death, the designs of an enemy who aimed at less than our lives.