A Factor of EvolutionMutual Aid: A Factor of Evolution Peter Kropotkin 1902 Chapter 1: MUTUAL AID AMONG ANIMALS Struggle for existence. -- Mutual Aid -- a law of Nature and chief factor of progressive evolution. -- Invertebrates. -- Ants and Bees -- Birds: Hunting and fishing associations. -- Sociability. -- Mutual protection among small birds. -- Cranes; parrots. The conception of struggle for existence as a factor of evolution, introduced into science by Darwin and Wallace, has permitted us to embrace an immensely wide range of phenomena in one single generalization, which soon became the very basis of our philosophical, biological, and sociological speculations. An immense variety of facts: -- adaptations of function and structure of organic beings to their surroundings; physiological and anatomical evolution; intellectual progress, and moral development itself, which we formerly used to explain by so many different causes, were embodied by...
To one not familiar with the Russian language the accessible data relative to the external life of Leo Nikolaevich Tolstoy, the author of this book, are, to say the least, not voluminous. His name does not appear in that heterogeneous record of celebrities known as The Men of the Time, nor is it to be found in M. Vapereau's comprehensive Dictionnaire des Contemporains. And yet Count Leo Tolstoy is acknowledged by competent critics to be a man of extraordinary genius, who, certainly in one instance, has produced a masterpiece of literature which will continue to rank with the great artistic productions of this age. Perhaps it is enough for us to know that he was born on his father's estate in the Russian province of Tula, in the year 1828; that he received a good home education and studied the oriental languages at the University of Kasan; that he was for a time in the army, which he entered at the age of twenty-three as an officer of artillery, serving later...