I'd agree that the terms 'weak' and 'strong' are used too loosely about people especially in moral matters. However in the case of disobeying one's conscience i

I'd agree that the terms 'weak' and 'strong' are used too loosely about people especially in moral matters. However in the case of disobeying one's conscience it seems clear: part of the mind wants A and another part wants B. Disunity is weakness.