The works of nature first acquire a meaning in the commentaries they provoke.

Even under the most favorable circumstances no mortal can be asked to seize the truth in its wholeness or at its center.

There are three traps that strangle philosophy: The church, the marriage bed, and the professor's chair.

When men and women agree, it is only in their conclusions; their reasons are always different.

Man's most serious activity is play.

Man alone knows that he must die; but that very knowledge raises him, in a sense, above mortality, by making him a sharer in the vision of eternal truth. He becomes the spectator of his own tragedy; he sympathizes so much with the fury of the storm that he has no ears left for the shipwrecked sailor, though the sailor were his own soul. The truth is cruel, but it can be loved, and it makes free those who have loved it.

Intelligence is quickness in seeing things as they are.