Science has fulfilled her function when she has ascertained and enunciated truth.

Action is the catalyst that creates accomplishments. It is the path that takes us from uncrafted hopes to realized dreams.

In the world of letters, learning and knowledge are one, and books are the source of both; whereas in science, as in life, learning and knowledge are distinct, and the study of things, and not of books, is the source of the latter.

It may be quite true that some negroes are better than some white men; but no rational man, cognisant of the facts, believes that the average negro is the equal, still less the superior, of the average white man. And, if this be true, it is simply incredible that, when all his disabilities are removed, and our prognathous relative has a fair field and no favour, as well as no oppressor, he will be able to compete successfully with his bigger-brained and smaller-jawed rival, in a contest which is to be carried on by thoughts and not by bites.

Whatever evil voices may rage, Science, secure among the powers that are eternal, will do her work and be blessed.

There is no greater mistake than the hasty conclusion that opinions are worthless because they are badly argued.

Every philosophical thinker hails it [The Origin of Species] as a veritable Whitworth gun in the armoury of liberalism.