By doubting we come at truth.

An old man with something of the youth in him, may feel young in mind and heart only.

All great men are partially inspired.

There is no mortal whom pain and disease do not reach.

The judgment of posterity is truer, because it is free from envy and malevolence.

This seems to be advanced as the surest basis for our belief in the existence of gods, that there is no race so uncivilized, no one in the world so barbarous that his mind has no inkling of a belief in gods.

Friendship is the only point in human affairs concerning the benefit of which all, with one voice, agree.