As modern physics started with the Newtonian revolution, so modern philosophy starts with what one might call the Cartesian Catastrophe. The catastrophe consisted in the splitting up of the world into the realms of matter and mind, and the identification of 'mind' with conscious thinking. The result of this identification was the shallow rationalism of l' esprit Cartesien, and an impoverishment of psychology which it took three centuries to remedy even in part.

History is a priori amoral; it has no conscience.

Space-ships and time machines are no escape from the human condition.

The principle mark of genius is not perfection but originality, the opening of new frontiers.

Two half truths do not make a truth.

The creativity and pathology of the human mind are, after all, two sides of the same medal coined in the evolutionary mint. The first is responsible for the splendour of our cathedrals, the second for the gargoyles that decorate them to remind us that the world is full of monsters, devils, and succubi.

In the index to the six hundred odd pages of Arnold Toynbee's A Study of History, abridged version, the names of Copernicus, Galileo, Descartes and Newton do not occur yet their cosmic quest destroyed the medieval vision of an immutable social order in a walled-in universe and transformed the European landscape, society, culture, habits and general outlook, as thoroughly as if a new species had arisen on this planet.