The time has come to stop beating our heads against stone walls under the illusion that we have been appointed policeman to the human race.

Successful ... politicians are insecure and intimidated men. They advance politically only as they placate, appease, bribe, seduce, bamboozle or otherwise manage to manipulate the demanding and threatening elements in their constituencies.

The radical novelty of modern science lies precisely in the rejection of the belief... that the forces which move the stars and atoms are contingent upon the preferences of the human heart.

It is all very well to talk about being the captain of your soul. It is hard, and only a few heroes, saints, and geniuses have been the captains of their souls for any extended period of their lives.

We forge gradually our greatest instrument for understanding the world - introspection. We discover that humanity may resemble us very considerably - that the best way of knowing the inwardness of our neighbors is to know ourselves.

Men fall into a routine when they are tired and slack: it has all the appearance of activity with few of its burdens.

The devil is merely a fallen angel, and when God lost Satan he lost one of his best lieutenants.