You do not settle whether an argument is justified by merely showing that it is of some use. The distinction is not between useful and useless experiments but between barbarous and civilized behaviour. Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.
George Bernard ShawThe first prison I ever saw had inscribed on it CEASE TO DO EVIL: LEARN TO DO WELL; but as the inscription was on the outside, the prisoners could not read it.
George Bernard Shaw