"Complacent ignorance is the most lethal sickness of the soul."

"Lust is inseparably accompanied with the troubling of all order, with impudence, unseemliness, sloth, and dissoluteness."

"Science is nothing but perception."

"It seems to me that many fall into it even against their will, and fancy they are discussing, when they are merely debating, because they cannot distinguish the meanings of a term, in their investigation of any question, but carry on their opposition to what is stated, by attacking the mere words, employing the art of debate, and not that of philosophical discussion."

"Any man may easily do harm, but not every man can do good to another."

"He who commits injustice is ever made more wretched than he who suffers it."

"Assuredly he will love that most whose interests he regards as identical with his own, and in whose prosperity or adversity he believes his own fortunes to be involved."

"There are two things a person should never be angry at, what they can help and what they cannot."

"All learning has an emotional base."

"Justice will only exist where those not affected by injustice are filled with the same amount of indignation as those offended."