A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite.
A man accustomed to American food and American domestic cookery would not starve to death suddenly in Europe, but I think he would gradually waste away, and eventually die.
To make a good salad is to be a brilliant diplomatist - the problem is entirely the same in both cases. To know exactly how much oil one must put with one's vinegar.