I am not interested to know whether vivisection produces results that are profitable to the human race or doesn't...The pain which it inflicts upon unconsenting animals is the basis of my enmity toward it, and it is to me sufficient justification of the enmity without looking further.
Mine was a trained Presbyterian conscience and knew but the one duty - to hunt and harry its slave upon all pretexts and on all occasions, particularly when there was no sense nor reason in it.
Custom is custom: it is built of brass, boiler-iron, granite; facts, reasonings, arguments have no more effect upon it than the idle winds have upon Gibraltar.