What is the State of Nature?

The state of nature is where all individuals were naturally equal. Every person was free to do what he or she needed to do to survive. As a result everyone suffered from continued fear and danger of violent death; and the life of man [was] solitary, poor, nasty, brutish, and short.

Hobbes described this in The Leviathan,  and John Locke agreed with brutality of the state of nature, which is required a social contract to assure peace. But both had different claims to assure peace.