Human nature:
According to Thomas Hobbes, Man basically was an unsocial, lonely, selfish and quarrelsome creature. He used to indulge in continuous strife for his selfishness. To get success in his endeavor, he resorted to lies, corruption and violence.
State of Nature:
According to Hobbes, due to brutal tendencies of human nature, his state of nature was extremely painful and full of struggles. This was the state of continuous war and conflicts, in which, every person was in a state of undeclared war with the other. Thus, human life in the state of nature was lonely, unsafe and brutal.