„Modern natural history deals only incidentally with the identity of plants and animals, and only incidentally with their habits and behaviors. It deals principally with their relations to each other, their relation to the soil and water in which they grow, and their relations to the human beings who sing about 'my country' but see little or nothing of its inner workings. This new science of relationships is called ecology, but what we call it matters nothing. The question is, does the educated citizen know he is only a cog in an ecological mechanism? That if he will work with that mechanism his mental wealth and his material wealth can expand indefinitely? But that if he refuses to work with it, it will ultimately grind him to dust? If education does not teach us these things, then what is education for?“
— Aldo Leopold American writer and scientist 1887 - 1948
"Natural History: The Forgotten Science" ; Published in Round River, Luna B. Leopold (ed.), Oxford University Press, 1966, p. 63-64.