To arrive at a just estimate of a renowned man's character one must judge it by the standards of his time, not ours.

In the space of one hundred and seventy-six years the Mississippi has shortened itself two hundred and forty-two miles. Therefore, in the Old Silurian Period the Mississippi River was upward of one million three hundred thousand miles long, seven hundred and forty-two years from now the Mississippi will be only a mile and three-quarters long. There is something fascinating about science. One gets such wholesome returns of conjecture out of such a trifling investment of fact.

One day man by the slow processes of evolution shall develop into something really fine and high - some billions of years hence, say.

What is the difference between a taxidermist and a tax collector? The taxidermist takes only your skin.

An average English word is four letters and a half. By hard, honest labor I've dug all the large words out of my vocabulary and shaved it down till the average is three and a half... I never write metropolis for seven cents, because I can get the same money for city. I never write policeman, because I can get the same price for cop.... I never write valetudinarian at all, for not even hunger and wretchedness can humble me to the point where I will do a word like that for seven cents; I wouldn't do it for fifteen.

In religion, India is the only millionaire... the One land that all men desire to see, and having seen once, by even a glimpse, would not give that glimpse for all the shows of all the rest of the globe combined.

It is our nature to conform; it is a force which not many can successfully resist. What is its seat? The inborn requirement of self-approval.