Read the opening of Chapter 1, or scroll down to read the Introduction.

Table of Contents

  1. The Reach of Explanations (excerpt)
  2. Closer to Reality
  3. The Spark
  4. Creation
  5. The Reality of Abstractions
  6. The Jump to Universality
  7. Artificial Creativity
  8. A Window on Infinity
  9. Optimism
  10. A Dream of Socrates
  11. The Multiverse
  12. A Physicist’s History of Bad Philosophy
  13. Choices
  14. Why are Flowers Beautiful?
  15. The Evolution of Culture
  16. The Evolution of Creativity
  17. Unsustainable
  18. The Beginning


Progress that is both rapid enough to be noticed and stable enough to continue over many generations has been achieved only once in the history of our species. It began at approximately the time of the scientific revolution, and is still under way. It has included improvements not only in scientific understanding, but also in technology, political institutions, moral values, art, and every aspect of human welfare.

Whenever there has been progress, there have been influential thinkers who denied that it was genuine, that it was desirable, or even that the concept was meaningful. They should have known better. There is indeed an objective difference between a false explanation and a true one, between chronic failure to solve a problem and solving it, and also between wrong and right, ugly and beautiful, suffering and its alleviation – and thus between stagnation and progress in the fullest sense.

In this book I argue that all progress, both theoretical and practical, has resulted from a single human activity: the quest for what I call good explanations. Though this quest is uniquely human, its effectiveness is also a fundamental fact about reality at the most impersonal, cosmic level – namely that it conforms to universal laws of nature that are indeed good explanations. This simple relationship between the cosmic and the human is a hint of a central role of people in the cosmic scheme of things.

Must progress come to an end – either in catastrophe or in some sort of completion – or is it unbounded? The answer is the latter. That unboundedness is the ‘infinity’ referred to in the title of this book. Explaining it, and the conditions under which progress can and cannot happen, entails a journey through virtually every fundamental field of science and philosophy. From each such field we learn that, although progress has no necessary end, it does have a necessary beginning: a cause, or an event with which it starts, or a necessary condition for it to take off and to thrive. Each of these beginnings is ‘the beginning of infinity’ as viewed from the perspective of that field. Many seem, superficially, to be unconnected. But they are all facets of a single attribute of reality, which I call the beginning of infinity.

(Continue to the opening of Chapter 1: The Reach of Explanations…)