Full Idea
The sergeant that can command a soldier to march up to the mouth of a cannon ...cannot command that soldier to give him one penny of his money.
Gist of Idea
Soldiers can be commanded to die, but not to hand over their money
Source
John Locke (Second Treatise of Government [1690], 139)
Book Reference
Locke,John: 'Two Treatises of Government' [Everyman 1988], p.188
A Reaction
A very nice and accurate illustration of a principle which runs so deep that it does indeed look like a basis of society.