Methodology of Philosophy

Scientists are constrained by the laws of nature but philosophers are constrained by the laws of logic

What logic is

Argument - set of propositions that are called premises which are put forward as a reason to believe another proposition called the conclusion.

I want to get to London by noon. It is necessary condition to catch the 10 o'clock train to get to London by noon. The conclusion is catch the 10 o'Clock train

Deontic Kant- the logic of moral discourse. Lying is wrong therefore don't lie. (Only one premise and a conclusion). Note, straight from the premise and then to the conclusion but without the desire. (i.e. I want to get to London by noon). Lying is wrong therefore there is no desire. If you want to add to the desire to do right implies the possible desire to do wrong and in that case you really do not understand what it is to do right. i.e. You do not steal something not because you would be found out - you do not do it because it is wrong.