Peter Kropotkin...was recognized by friend and foe as one of the greatest minds...of the nineteenth century...The lucidity and brilliance of his mind combined with his warm-heartednes s into the harmonious whole of a fascinating and gracious personality.

John Burroughs has stated that experimental study of animals in captivity is absolutely useless. Their character, their habits, their appetites undergo a complete transformation when torn from their soil in field and forest. With human nature caged in a narrow space, whipped daily into submission, how can we speak of its potentialities?

Lack of fairness to an opponent is essentially a sign of weakness.

How to raise this dead level of theistic belief is really a matter of life and death for all denominations. Therefore their tolerance; but it is a tolerance not of understanding; but of weakness.

Success achieved by the most contemptible means cannot but destroy the soul. ... It helps to cover up the inner corruption and gradually dulls one's scruples, so that those who begin with some high ambition cannot, even if they would, create anything out of themselves.

People have only as much liberty as they have the intelligence to want and the courage to take.

Sure, nothing succeeds like success. Fact is, dearest, we are fools. We cling to an ideal no one wants or cares about. I am the greater fool of the two of us. I go on eating out my heart and poisoning every moment of my life in the attempt to rouse people's sensibilities. At least if I could do it with closed eyes. The irony is I see the futility of my efforts and yet I can't let go.