“Sorrow is one of the vibrations that prove the fact of living.”

“People sometimes pay with their lives for saying aloud what they think. In fact, one can even get killed for giving me information. I am not the only one in danger. I have examples that prove it.”

“That vice has often proved an emancipator of the mind, is one of the most humiliating, but, at the same time, one of the most unquestionable facts in history.”

“with love one can live even without happiness. Even in sorrow life is sweet; life is sweet, however one lives.”

“Socially inferior animals are the ones that make the most strenuous, resourceful efforts to get to know their keepers. They prove to be the ones most faithful to them…it is a fact commonly known in the trade.”

“The fact that man knows right from wrong proves his intellectual superiority to the other creatures; but the fact that he can do wrong proves his moral inferiority to any creatures that cannot.”