"Kuhn has the unmistakable address of a man, who, so far from wanting to score points, is anxious above all else to get at the truth of matters."-Sir Peter Medawar, Nature

Scholars from disciplines as diverse as political science and art history have offered widely differing interpretations of Kuhn's ideas, appropriating his notions of paradigm shifts and revolutions to fit their own theories, however imperfectly. Destined to become the authoritative philosophical study of Kuhn's work. Bibliography.

What is the meaning of life? Modern professional philosophy has largely renounced the attempt to answer this question and has restricted itself to the pursuit of more esoteric truths. Not so David Norton. Following in the footsteps of Plato and Aristotle, Kierkegaard and Nietzsche, Jung and Maslow, he sets forth a distinctive vision of the individual's search for his place in the scheme of things. Norton's theory of individualism is rooted in the eudaimonistic ethics of the Creeks, who viewed each person as innately possessing a unique potential it was his destiny to fulfill. Very much the same idea resurfaced in modern times with the British idealists and Continental existentialists. The author reviews these antecedents, showing how his theory differs from those of his predecessors. After a fascinating chapter on "The Stages of Life," Norton shows how the mature consciousness of one's destiny leads to direct, intimate knowledge of other persons, and how this in turn provides the basis for social morality. The conception of justice in which this theory culminates, rooted as it is in essential human differences, provides a challenging alternative to the much-discussed theories of Rawls and Nozick.

"A masterly assessment of the way the idea of quanta of radiation became part of 20th-century physics. . . . The book not only deals with a topic of importance and interest to all scientists, but is also a polished literary work, described (accurately) by one of its original reviewers as a scientific detective story."—John Gribbin, New Scientist "Every scientist should have this book."—Paul Davies, New Scientist

Divided into three parts, this work is a record of the direction Kuhn was taking during the last two decades of his life. It consists of essays in which he refines the basic concepts set forth in "Structure"--Paradigm shifts, incommensurability, and the nature of scientific progress.