He who boasts of his pedigree praises that which does not belong to him.
The first step in a person's salvation is knowledge of their sin.
It is the superfluous things for which men sweat.
Many discoveries are reserved for ages still to come . . . . Our universe is a sorry little affair unless it has in it something for every age to investigate.
If thou art a man, admire those who attempt great things, even though they fail.
Philosophy alone makes the mind invincible, and places us out of the reach of fortune, so that all her arrows fall short of us.