On the Origin of Species by Means of Natural Selection (first edition)writing · 1859DirectVerified quotation — claim 01“It may be said that natural selection is daily and hourly scrutinising, throughout the world, every variation, even the slightest; rejecting that which is bad, preserving and adding up all that is good; silently and insensibly working, whenever and wherever opportunity offers, at the improvement of each organic being in relation to its organic and inorganic conditions of life.” — Charles DarwinVerified quotation — claim 01“As natural selection acts solely by accumulating slight, successive, favourable variations, it can produce no great or sudden modification; it can act only by very short and slow steps.” — Charles Darwin
Sources supporting claim 01
The Autobiography of Charles Darwinwriting · written 1876; published 1887DirectNo passage is mapped to this claim. Sources are listed for provenance; a quotation appears only when it has been verified for the specific claim.