Immigration

There cannot be the slightest doubt that migration barriers diminish the productivity of human labor.

Liberalism, p. 139

The closed-door policy is one of the root causes of our wars.

Omnipotent Government, p. 263

Immigrants soon find their place in urban life, they soon adopt, externally, town manners and opinions, but for a long time they remain foreign to civic thought. One cannot make a social philosophy one’s own as easily as a new costume. . . . More menacing than barbarians storming the walls from without are the seeming citizens within—those who are citizens in gesture, but not in thought.

Socialism, p. 38