Deafening Robes of Dawn, 65th Day of Summer, 525 M.E. (Atlas):  "The human obsession with purpose is merely a distraction from the absurdity of existence." — Nikolai Gogol

According to author Michael Chabon, each breath we take contains millions of argon atoms that will have previously passed in and out of the lungs of every other human being who ever lived. A few of those argon atoms will have been previously breathed by any one specific human (or, for that matter, triceratops, Chabon points out) you care to imagine. 

During each 90-minute period of sitting meditation, I take an average of 750 breaths. During each sitting. I inhale and exhale argon atoms previously breathed by the Buddha, Subhuti, Sariputra, Mahakasyapa, Ananda, Nagaruna, Bodhidharma, Eihei Dogen, Genghis Khan, Madeline Kahn, Cleopatra, Cleo Laine, Penny Lane, John Lennon, Johnny Hartman and John Coltrane, Ravi Coltrane, Ravi Shankar, the Yum-Yab Killers, that schoolgirl I once saw on the bus carrying a copy of the Meet the Beatles LP pressed close to her chest, the Beatles, Monty Python, Hildegard of Bingen, Werner von Braun, Albert Einstein, Zachary Taylor, Xica da Silva, the string section of the Berlin Philharmonic, the Manson family, Sid Vicious, Kurt Cobain, Annie Oakley, Sweet Melissa, all the girls I've loved before, Julio Iglesias and Willie Nelson, Turok - Dinosaur Hunter, Freddy Lynn, Harvey Milk, Sandra Oh, Barbra Streisand, Sandra Bernhard, Sarah Bernhardt, Wes Anderson, Jean-Luc Goddard, Orson Welles,  Bertolucci, Berlusconi, Pasolini, Bert and Ernie, and probably you. You've probably breathed in some argon atoms that I once exhaled. 

Another fun fact: Argon is the third most abundant gas in Earth's atmosphere, more than twice as abundant as water vapor and 23 times as abundant as carbon dioxide. But nearly every argon atom (in fact, every atom other than hydrogen and some helium), wasn't formed during the Big Bang but only came into being later. It takes tremendous pressure to produce the fusion necessary to press 18 protons together to form an argon atom, and the only place that can happen is inside of a star. Every argon atom is from an exploded star somewhere in the cosmos, and we're all inhaling and exhaling and freely sharing atoms that are truly star born, cosmic bits of stardust passed from being to being.