Never do anything against conscience even if the state demands it.
Albert Einstein
Self-distrust is the cause of most of our failure. In the assurance of strength there is strength, and, they are the weakest, however strong, who have no faith in themselves or their powers.
Christian Nevell Bovee
The mathematician lives long and lives young; the wings of his soul do not early drop off, nor do its pores become clogged with the earthy particles blown from the dusty highways of vulgar life.