Is it accurate to say that motivation to do anything stems wholly from one of only two base emotions—love or pride? From the former comes the desire to unify and uplift all, and from the latter comes the desire to conquer and fully elevate the self over all others?

Your categorization here is a useful one if rather black and white. Again, we are not enamored of the choice of terms here in singling out pride as a type of evil when really what is meant is "glorification of the self and a serving of the self in directing one’s energy."