← Familiar Quotations / A Collection of Passages, Phrases, and Proverbs Traced to / Their Sources in Ancient and Modern Literature

Charles Darwin. 1809-1882

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.

The Origin of Species. Chap. iii.

We will now discuss in a little more detail the Struggle for Existence.[622:3]

The Origin of Species. Chap. iii.

The expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient.[622:4]

The Origin of Species. Chap. iii.