The great variability of all the external differences between the races of man, likewise indicates that they cannot be of much importance; for if important, they would long ago have been either fixed and preserved, or eliminated.

Blushing is the most peculiar and most human of all expressions.

Man, wonderful man, must collapse, into nature's cauldron, he is no deity, he is no exception.

That there is much suffering in the world no one disputes. Which is more likely, that pain and evil are the result of an all-powerful and good God, or the product of uncaring natural forces? The presence of much suffering agrees well with the view that all organic beings have been developed through variation and natural selection.

It is not history which uses men as a means of achieving - as if it were an individual person - its own ends. History is nothing but the activity of men in pursuit of their ends.

History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.