"The end justifies the means, when the end is good and the means are not evil in themselves."

"The act of generation is more noble than the act of nutrition."

"It is not lawful for a woman to hold public office, because she is not perfect enough to be able to direct others."

"It is lawful to resist a tyrant, if his tyranny is such as to endanger the common good."

"It is better to illuminate than merely to shine, to deliver to others contemplated truths than merely to contemplate."