If we compare Europe with other continents, it is marked out as [another] persecuting continent.

Against the vast majority of my countrymen, even at this moment, in the name of humanity and civilization, I protest against our share in the destruction of Germany. A month ago Europe was a peaceful comity of nations; if an Englishman killed a German, he was hanged. Now, if an Englishman kills a German, or if a German kills an Englishman, he is a patriot, who has deserved well of his country.

Modern life cannot be constructed on . . . physically strenuous principles. A great deal of work is sedentary, and most manual work exercises only a few specialized muscles.

Science, by itself cannot, supply us with an ethic.

The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others.

If you wish to be happy yourself, you must resign yourself to seeing others also happy.

Physics is mathematical not because we know so much about the physical world, but because we know so little; it is only its mathematical properties that we can discover.