Abstract
Hobbes conception of reason as computation or reckoning is significantly different in Part I of De Corpore from what I take to be the later treatment in Leviathan. In the late actual computation with words starts with making an affirmation, framing a proposition. Reckoning then has to do with the consequences of propositions, or how they connect the facts, states of affairs or actions which they refer tor account. Starting from this it can be made clear how Hobbes understood the crucial application of this conception to natural law, identified as 'right reason'