To a man whose mind is free there is something even more intolerable in the sufferings of animals than in the sufferings of man. For with the latter it is at least admitted that suffering is evil and that the man who causes it is a criminal. But thousands of animals are uselessly butchered every day without a shadow of remorse.
—Romain Rolland
antithesis
A figure of speech in which words and phrases with opposite meanings are balanced against each other. An example of antithesis is "To err is human, to forgive, divine." (Alexander Pope)