“It is willingly granted that by cultivation the origination of new varieties is favored, and that by man's labor many varieties are acquired which, under natural conditions, would be lost; but nothing justifies the assumption that the tendency to formation of varieties is so extraordinarily increased that the species speedily lose all stability, and their offspring diverge into an endless series of extremely variable forms. Were the change in the conditions the sole cause of variability we might expect that those cultivated plants which are grown for centuries under almost identical conditions would again attain constancy.”
Experiments with Hybrids of Other Species of Plants
Experiments in plant-hybridisation (1865)
Help us to complete the source, original and additional information
Gregor Mendel 11
Silesian scientist and Augustinian friar 1822–1884Related quotes
Source: An Introduction to Cybernetics (1956), Part 2: Variety, p. 127
Locus interview (1998)
Context: To my mind, the expression of divinity is in variety, and the more variable the creation, the more variable the creatures that surround us, botanical and zoological, the more chance we have to learn and to see into life itself, nature itself. If we were just human beings, living in a spaceship, with an algae farm to give us food, we would not be moved to learn nearly as many things as we are moved by living on a world, surrounded by all kinds of variety. And when I see that variety being first decimated, and then halved — and I imagine in another hundred years it may be down by 90% and there'll be only 10% of what we had when I was a child — that makes me very sad, and very despairing, because we need variety. We came from that, we were born from that, it's our world, the world in which we became what we have become.

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.20, p. 389

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 423

Source: 1920s, Coming of Age in Samoa (1928), p. 131 (1973 edition)

Source: Multi-Secularism: A New Agenda, (2014), p. 58