You don't have a conservation policy unless you have a population policy.
The outgrowth of conservation, the inevitable result, is national efficiency
Conservation is the application of common sense to the common problems for the common good.
In conservation, the motto should always be 'never say die'.
The more you know about a species, the more you understand about how better to help protect them.
Till now man has been up against Nature; from now on he will be up against his own nature.
Environmentalism opposes reckless innovation and makes conservation the central order of business.
In our attempt to make conservation easy, we have made it trivial.
Our ability to perceive quality in nature begins, as in art, with the pretty.
Prudence never kindled a fire in the human mind; I have no hope for conservation born of fear.