Paramecium to Serotonin* You are my long-lost self, perchance a better half, you see? Behold though, we are at the mercy of his, her, and their Serotonin fervently beckoning us. No more a snugly locked I-Thou unit we are, I suppose. What am I to do, my darling, hence? *A ubiquitous chemical material in the animal kingdom related to vasoconstriction and/or mental depression. © Ryang Suh 2011.08.1..