Want blamed on overpopulation is really caused by war, tyranny and oppression

What I say is this: that nowhere is there any instance which will support this theory; that nowhere can want be properly attributed to the pressure of population against the power to procure subsistence in the then existing degree of human knowledge; that everywhere the vice and misery attributed to over-population can be traced to the warfare, tyranny, and oppression which prevent knowledge from being utilized and deny the security essential to production.