Why does Hobbes think that it is necessary for persons to transfer nearly all of their rights to the sovereign rather than merely some of their rights?

2 answers

Hobbes believed that it's in man's best interest to live in a lawful and orderly society. Therefore, we give up our rights to the sovereign who enforces this law and order.

http://en.wikipedia.org/wiki/Natural_and_legal_rights#Thomas_Hobbes
As locke think we can give some of our rights why hobbes focus on transferring all the rights to sovereign. Why he make exception for self defense