Answer:
The law of reason / Law of nature
Step-by-step explanation:
When reading the Leviathan, you can see that Hobbes calls "The law of reason" to a precept, or general rule, found out by reason, by which a man is forbidden to do that which is destructive of his life, or take away the means of preserving the same, and to omit that by which he thinks it may be best preserved.
According to Hobbes, this first rule or "Law of Nature" is discovered through reason and it can be summarized as "To seek peace, and follow it"