For each of the following arguments,
a. Translate the argument into standard form.
b. Name the mood and figure of its standard-form translation.
c. Test its validity using a Venn diagram. If it is valid, give its traditional name.
d. If it is invalid, name the fallacy it commits.

Since morals, therefore, have an influence on the actions and affections, it follows, that they cannot be deriv’d from reason; and that because reason alone, as we have already prov’d, can never have any such influence.
—David Hume, A Treatise of Human Nature , 1739