"We are reminded of this famous verse in the Tamil compendium of didactic poetry, Nālaṭiyār: When men speak of ‘good varna’ and ‘bad varna,’ it is a mere figure of speech, and has no real meaning. Not even by possessions, made by ancient glories, but by self-denial, learning, and energy is varna truly determined."
January 1, 1970
https://en.wikiquote.org/wiki/Varna_(Hinduism)