One general law, leading to the advancement of all organic beings, namely, multiply, vary, let the strongest live and the weakest die.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
The moral faculties are generally esteemed, and with justice, as of higher value than the intellectual powers.
If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.
I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.
Great is the power of steady misrepresentation; but the history of science shows that fortunately this power does not long endure.
False facts are highly injurious to the progress of science, for they often long endure; but false views, if supported by some evidence, do little harm, as every one takes a salutary pleasure in proving their falseness; and when this is done, one path towards error is closed and the road to truth is often at the same time opened.