I keep my copy of Hobbes bookmarked for occasions such as this.
Hereby it is manifest that, during the time men live without a common power to keep them all in awe, they are in that condition which is called war, and such a war as is of every man against every man.
And, a few paragraphs later, the refutation of your assertion:
To this war of every man against every man this also is consequent, that nothing can be unjust. The notions of right and wrong, justice and injustice, have there no place. Where there is no common power, there is no law; where no law, no injustice. Force and fraud are in war the two cardinal virtues. Justice and injustice are none of the faculties neither of the body nor mind. If they were, they might be in a man that were alone in the world, as well as his senses and passions. They are qualities that relate to men in society, not in solitude. It is consequent also to the same condition that there be no propriety, no dominion, no ‘mine’ and ‘thine’ distinct, but only that to be every man’s that he can get, and for so long as he can keep it.