The equation of animal and vegetable life is too complicated a problem for human intelligence to solve, and we can never know how wide a circle of disturbance we produce in the harmonies of nature when we throw the smallest… — George Perkins Marsh Copy Share Image
Man is everywhere a disturbing agent. Wherever he plants his foot, the harmonies of nature are turned to discords. — George Perkins Marsh Copy Share Image
The improvement of forest trees is the work of centuries. So much more the reason for beginning now. — George Perkins Marsh Copy Share Image
The equation of animal and vegetable life is too complicated a problem for human intelligence to solve, and we can never know how wide… — George Perkins Marsh Copy Share Image
When not protected by law, by popular favor or superstition, or by other special circumstances, [birds] yield very readily to the influences of civilization,… — George Perkins Marsh Copy Share Image
We have now felled forest enough everywhere, in many districts far too much. Let us restore this one element of material life to its… — George Perkins Marsh Copy Share Image
All Nature is linked together by invisible bonds and every organic creature, however low, however feeble, however dependent, is necessary to the well-being of… — George Perkins Marsh Copy Share Image
Man has too long forgotten that the earth was given to him for usufruct alone, not for consumption, still less for profligate waste. — George Perkins Marsh Copy Share Image
Apart from the hostile influence of man, the organic and the inorganic world are ... bound together by such mutual relations and adaptations s… — George Perkins Marsh Copy Share Image
Wherever modern Science has exploded a superstitious fable or even a picturesque error, she has replaced it with a grander and even more poetical… — George Perkins Marsh Copy Share Image
![“When not protected by law, by popular favor or superstition, or by other special circumstances, [birds] yield very readily to the influences of civilization, and, though the first operations of the settler are favorable to the increase of many species, the great extension of rural and of…” quote by George Perkins Marsh](https://sms4smile.com/quotes/img-quotes/34e/george-perkins-marsh-40286_agriculture_when-not-protected-by-law-by-popular-fav_1567838.jpg)
