“A man’s worth is no greater than the worth of his ambitions.”

“The happiness and unhappiness of the rational, social animal depends not on what he feels but on what he does; just as his virtue and vice consist not in feeling but in doing.”

“Precz z książkami! Już nie dawaj się im pociągnąć! Nie wolno! (...) Łaknienie zaś książek precz od siebie rzuć, byś nie umierał wśród narzekań, lecz spokojnie.”

“As for others whose lives are not so ordered, he reminds himself constantly of the characters they exhibit daily and nightly at home and abroad, and of the sort of society they frequent; and the approval of such men, who do not even stand well in their own eyes, has no value for him.”

“Because a thing seems difficult for you, do not think it impossible for anyone to accomplish.”

“A person's worth is measured by the worth of what he values.”

“Look beneath the surface; let not the several quality of a thing nor its worth escape thee.”