The state of Nature has a law of Nature to govern it, which obliges everyone, and reason, which is that law, teaches mankind that all being equal and independent, no one ought to harm another in his life, health, liberty or possessions.
Gist of Idea
The rational law of nature says we are all equal and independent, and should show mutual respect
John Locke (Second Treatise of Government , 006)
He adds that this is because we are all the property of God. Locke is more optimistic than Hobbes or Rousseau about this, since he thinks we have a natural obligation to be nice.
Locke,John: 'Two Treatises of Government' [Everyman 1988], p.119