Petr Kropotkin is chiefly remembered today as one of the great advocates of anarchism. For those who reject the state and look forward to the creation of a human society without a central, coercive government, Kropotkin's influence has been immense. His writings, along with those of Mikhail Aleksandrovich Bakunin and Pierre-Joseph Proudhon, have attained a canonical status among anarchists that is little short of holy writ. Writing fluently in French and English as well as Russian, Kropotkin produced a vast body of writing--books, articles, pamphlets, journals, and speeches--especially after his withdrawal from revolutionary activism in the 1880s. In works such as Sovremennaia nauka i anarkhizm (1901; translated as Modern Science and Anarchism, 1903) and Mutual Aid: A Factor of Evolution (1902), he sought to place anarchist principles on a scientific basis, drawing in particular on Charles Darwin's ideas of biological and social evolution. Two sides of Kropotkin's personality are evident here...