All war must be just the killing of strangers against whom you feel no personal animosity; strangers whom, in other circumstances, you would help if you found them in trouble, and who would help you if you needed it.
...the life which is best for men, both separately, as individuals, and in the mass, as states, is the life which has virtue sufficiently supported by material resources to facilitate participation in the actions that virtue calls for.
There is superstition in science quite as much as there is superstition in theology, and it is all the more dangerous because those suffering from it are profoundly convinced that they are freeing themselves from all superstition.