I do not question that a high degree of regard for animals is a good thing. But it must be a regulated regard. Cruelty ... cannot be forgiven. It is indeed ... a penal offence at law. But it is impossible to apply the word cruelty to ... scientists who have devoted themselves to vivisection experiments for the purpose of alleviating human suffering.
Justice Wright, National Anti-Vivisection Soc. v Inland Rev. Comm., 2 All E.R. 217 (1947)