The true measure of a man is what he would do if he knew he would never be caught.

In science there is only physics; all the rest is stamp collecting.

Large increases in cost with questionable increases in performance can be tolerated only in race horses and women.

The atheistic idea is so nonsensical that I cannot put it into words.

Heavier-than-air flying machines are impossible.

Science is bound, by the everlasting vow of honour, to face fearlessly every problem which can be fairly presented to it.

The more thoroughly I conduct scientific research, the more I believe that science excludes atheism.

Simplicity is a great element of good breeding.

I want to do everything in the world that can be done.

I have been out again on the river, rowing. I find nothing new.

I have been taking my daily walk round the island, and visited the sugar mill and the threshing mill again.

The master's irresponsible power has no such bound.

A great number of the women are victims to falling of the womb and weakness in the spine; but these are necessary results of their laborious existence, and do not belong either to climate or constitution.

But I do not admit the comparison between your slaves and even the lowest class of European free labourers, for the former are allowed the exercise of no faculties but those which they enjoy in common with the brutes that perish.

I have sometimes been haunted with the idea that it was an imperative duty, knowing what I know, and having seen what I have seen, to do all that lies in my power to show the dangers and the evils of this frightful institution.

I said I thought female labour of the sort exacted from these slaves, and corporal chastisement such as they endure, must be abhorrent to any manly or humane man.

In the north we could not hope to keep the worst and poorest servant for a single day in the wretched discomfort in which our negro servants are forced habitually to live.

The most intense curiosity and excitement prevailed, and though the weather was uncertain, enormous masses of densely packed people lined the road, shouting and waving hats and handkerchiefs as we flew by them.

The vast concourse of people who had assembled to witness the triumphant arrival of the successful travellers was of the lowest orders of mechanics and artisans, among whom great distress and a dangerous spirit of discontent with the government at that time prevailed.

The white man's blood and bones have begotten this bronze race, and bequeathed to it in some degree qualities, tendencies, capabilities, such as are the inheritance of the highest order of human animals.