“Would it be too bold to imagine, that in the great length of time, since the earth began to exist, perhaps millions of ages before the commencement of the history of mankind, would it be too bold to imagine, that all warm-blooded animals have arisen from one living filament, which the great first cause endued with animality, with the power of acquiring new parts, attended with new propensities, directed by irritations, sensations, volitions, and associations; and thus possessing the faculty of continuing to improve by its own inherent activity, and of delivering down those improvements by generation to its posterity, world without end!”— Erasmus Darwin (1794), Zoonomia: the Laws of Organic Life (pg. 397) [2]
“I was led to suspect, that elastic fluids, when they were mechanically expanded, would attract or absorb heat from the bodies in their vicinity; and that, when they were mechanically condensed, the fluid matter of heat would be pressed out of them, and disused among the adjacent bodies.”— Erasmus Darwin (1788), “Frigorific Experiments on the Mechanical Expansion of Air” [1]
A fool, Mr, Edgeworth, is one who has never made an experiment.-— Erasmus Darwin (c.1795), “Remark to Richard Edgeworth (Ѻ)”; as quoted by Stanley Jevons in ‘Experimental Legislation’ [4]