Man is only a moral being because he lives in society, since morality consists in solidarity with the group, and varies according to that solidarity. Cause all social life to vanish, and moral life would vanish at the same time, having no object to cling to.

Even one well-made observation will be enough in many cases, just as one well-constructed experiment often suffices for the establishment of a law.

Men have been obliged to make for themselves a notion of what religion is, long before the science of religions started its methodical comparisons.

Science cannot describe individuals, but only types. If human societies cannot be classified, they must remain inaccessible to scientific description.

If one class of society is obliged, in order to live, to take any price for its services, while another can abstain from such action thanks to resources at its disposal which, however, are not necessarily due to any social superiority, the second has an unjust advantage over the first at law. In other words, there cannot be rich and poor a birth without there being unjust contracts.

One cannot long remain so absorbed in contemplation of emptiness without being increasingly attracted to it. In vain one bestows on it the name of infinity; this does not change its nature. When one feels such pleasure in non-existence, one's inclination can be completely satisfied only by completely ceasing to exist.

At first sight, one does not see what relations there can be between religion and logic.