There was at all events one advantage in the choice of this day to my birth; my birthday throughout the whole of my childhood was a day of public rejoicing.

The drive toward knowledge has a moral origin.

Belief in truth begins with doubting all that has hitherto been believed to be true.

Only with the ultimate knowledge of all things will man have come to know himself. For things are but the boundaries of man.

Do you suppose that sacrifice is the hallmark of moral action?--Just stop to consider whether sacrifice is not involved in every action that is done with deliberation, the worst as well as the best.

Cows sometimes wear an expression resembling wonderment arrested on its way to becoming a question. In the eye of superior intelligence, on the other hand, lies the nil admirari spread out like the monotony of a cloudless sky.

The worst readers are those who behave like plundering troops: they take away a few things they can use, dirty and confound the remainder, and revile the whole.