Imust take a stand against war. i cannot support killing another human being. if we demonstrate peace, others may follow.
a. billy mitchell
b. franklin roosevelt
c. an isolationist
d. a pacifist

d. A pacifist.

Explanation:

A pacifist is a person who abhors of violence and war to solve any dispute. An isolationist is a person who endorse the idea that a country must not intervene in international politics and disputes. Franklin Roosevelt was not a pacifist nor an isolationist. Billy Mitchell was a former US Army general who proposed the need of an independent and modern Air Force in the late 1920s  and 1930s. The phrase reflects a moral position from a pacifist.

the answer is a) james madison.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.