"Of all forms of tyranny the least attractive and the most vulgar is the tyranny of mere wealth, the tyranny of plutocracy."

"Patriotism means to stand by the country. It does not mean to stand by the president."

"Do what you can, with what you have, where you are."

"The great virtue of my radicalism lies in the fact that I am perfectly ready, if necessary, to be radical on the conservative side."

"Justice consists not in being neutral between right and wrong, but in finding out the right and upholding it, wherever found, against the wrong."

"While my interest in natural history has added very little to my sum of achievement, it has added immeasurably to my sum of enjoyment in life."

"Living is having ups and downs and sharing them with friends."

"Adaptability is not imitation. It means power of resistance and assimilation."

"When beggars die, there are no comets seen; the heavens themselves blaze forth the death of princes."

"Unstable as water, thou shalt not excel."

"The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over."

"Money is good for bribing yourself through the inconveniences of life."