"War, as I remarked a moment ago, has hitherto been disappointing in this respect, but perhaps bacteriological war may prove more effective. If a Black Death could be spread throughout the world once i…"

"There are two motives for reading a book: one, that you enjoy it; the other, that you can boast about it."

"A habit of basing convictions upon evidence, and of giving to them only that degree of certainty which the evidence warrants, would, if it became general, cure most of the ills from which the world su…"

"Of all the forms of caution, caution in love is perhaps the most fatal to true happiness."

"To fear love is to fear life, and those who fear life are already three parts dead."