C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.
Adaptation
To wade in marshes and sea margins is the destiny of certain birds, and they are so accurately made for this that they are imprisoned in those places. Each animal out of its habitat would starve. To the physician, each man, each woman, is an amplification of one organ. A soldier, a locksmith, a bank-clerk, and a dancer could not exchange functions. And thus we are victims of adaptation.
Emerson.