For stock investors, the Greek hero Odysseus has bequeathed a timeless lesson. In Emily Wilson’s acclaimed translation of Homer’s epic, The Odyssey, he warns his men:  “[Circe] said we must avoid the voices of the otherworldly Sirens, steer past their flowering meadow. And she says that I alone should hear their singing. Bind me, to keep me upright at the mast, wound round with rope. If I beseech you and command you to set me free, you must increase my bonds and chain even tighter.“ The Sirens were mythical figures who enticed sailors to the dangerous cliffs of their island home…