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

“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.”

“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.”

“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.”

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

“Do not think that what is hard for you to master is humanly impossible; and if it is humanly possible, consider it to be within your reach.”

“In everything that you do, pause and ask yourself if death is a dreadful thing because it deprives you of this”