In a few generations more, there will probably be no room at all allowed for animals on the earth: no need of them, no toleration of them.

I am convinced that our movement will be more demoralized and weakened by blind and uncritical admiration than by frank admission of past mistakes.

I have to be allowed room to do all different things.

In animals, we have seen very serious genetic consequences coming not only in the first generation but in further generations.

Deep under our feet the Earth holds its molten breath, while the bones of countless generations watch us and wait.

No evil can result from its inhibition more pernicious than its toleration.