Pierre-Augustin Caron de Beaumarchais ([pjeʁ(oɡystɛ̃ kaʁɔ̃ də) bomaʁʃɛ]; 24 January 1732 – 18 May 1799) was a French polymath. At various times in his life, he was a watchmaker, inventor, playwright, musician, diplomat, spy, publisher, horticulturist, arms dealer, satirist, financier and revolutionary (both French and American).
That's the beauty of argument-if you argue correctly, you're never wrong.