For those who dislike archaic spelling, this edition with modernized text and spelling is the one for them. The opening sentence suffices to show the difference. The following is the original text:
"Concerning the Thoughts of man, I will consider them first Singly, and afterwards in Trayne, or dependence upon one another." (With Singly and Trayne in italics)
The modernized text in this edition is:
"Concerning the thoughts of man, I will consider them first singly, and afterwards in train, or dependence upon one another." (No italics)
There is a decent introduction by Gaskin, a bibliography, an index and explanatory notes, and this edition is very competitively priced.
Modern political philosophy begins with Hobbes. Before Hobbes, writers for centuries had accepted the divine right of kings or did not consider the origins of government, but Hobbes provides reasons as to why men come together to form government and ought to obey it. He starts with the assumption that the organised state is a choice. The alternative is the "state of nature", where there is both a "right" of nature and "laws" of nature. Hobbes uses these terms in a very individual way. The "right" of nature is "the Liberty each man hath, to use his own power...for the preservation of his own Life". The "laws" of nature dictate that each person should seek to live with others in peace, and should only retain the right to as much liberty as he is willing to permit others. These "laws" are found by reason, and are utilitarian rather than moral. Hobbes is simply saying that if men think about their situation, reason tells them that giving up their natural rights in exchange for others doing likewise is the best means of self-preservation, even though it is contrary to human nature.
On human nature Hobbes is cynical. Reason suggests the advantages of co-operation, but this is outweighed by instinct. Men are fundamentally competitive and selfish. They are also roughly equal in ability so no one person can impose his will on others, and hence the most one can hope for is to protect oneself from others. Life in the state of nature is "solitary, poor, nasty, brutish and short." Men are therefore driven to create government via a pact with others to give up their natural rights to a sovereign authority, which may be either an individual or an oligarchy (Hobbes prefers the former). Hobbes uses the concept of a "social contract". It is not an historical event but a logical device to describe the ongoing basis of consent to government. Hobbes' view of human nature is such that he allocates absolute power to the sovereign. Limited government, he believed, is unworkable for men are too prone to division and selfishness, and "a kingdom divided against itself cannot stand." Hobbes was influenced by the passionate divisions preceding the English Civil War. Hobbes wishes the sovereign to have the power of censorship, including the ability to prevent discussion of religion because he believed that such discussion leads to conflict. Anybody seeking to preach a new religion should be treated as a criminal. Had Hobbes been writing a century later he is unlikely to have mentioned religion. He was not himself a religious man, and his concern with religion stemmed from its importance in the conflicts in his own lifetime.
Is there an ultimate right of rebellion against the absolute ruler? The answer is to be found in the nature of the social contract. Men give up their natural right to self-preservation to a sovereign in order to to better achieve it. If a situation arises where the sovereign cannot ensure that safety then society is dissolved. Can any action by the sovereign be challenged? Yes, if a man is conscripted into military service (an obvious threat to life) in circumstances where the survival of the state is not threatened. If the survival of the state is threatened then so are the lives of its citizens, and in these circumstances the sovereign can impose conscription. Hobbes adds that even in this case a citizen should have the right to replace himself with a volunteer if one is available.
"Leviathan" is not an easy book, not helped by the fact that the English is that of a man born just 24 years after Shakespeare, though the modernized English makes it easier than the original.