"Out of the crooked timber of humanity, no straight thing was ever made".--Immanuel Kant. Philosopher Isaiah Berlin explores the complex, radical changes that have swept Western society as he proves to be "an activist of the intellect". "A beautifully patterned tapestry of philosophical thought. . . . A history of ideas that possesses all the drama of a novel, all the immediacy of headline news".--"The New York Times".