Click on the phrases to see them in context. The original texts by Immanuel Kant and David Hume are available from the Gutenberg Projet.

All the paths conducting to this end begin either from determinate experience and the peculiar constitution of the world of sense, and rise, according to the laws of causality, from it to the highest cause existing apart from the world--or from a purely indeterminate experience, that is, some empirical existence--or abstraction is made of all experience, and the existence of a supreme cause is concluded from a priori conceptions alone.