Social life necessitates some form of a government, and the men so placed in authority must curb and prevent all individual or group tendencies which are inherently selfish and likely to injure society. Usually, they go much further than necessary, for power corrupts and degrades. So that however much those rulers may love liberty and hate coercion, they will have to exercise coercion on recalcitrant individuals, till such time when every human being in that State is perfect, wholly unselfish, and devoted to the common good. The rulers of that State will also have to exercise coercion on outside groups who make predatory attacks, that is to say they will have to defend themselves, meeting force with force. The necessity for this will only disappear when there is only a single World-State.

Excerpts from Page 560-61 of the book 'An autobiography : Jawaharlal Nehru'