The Syracusan tyrant Dionysius was ever fearful of assassination. He allowed no one to trim his beard with a razor, so wary of having his throat slit was he. He trained his young daughters to trim his beard, and as they grew older, had them use heated walnut shells to singe off the hairs of his beard, and when they found husbands, he ceased even this. He slept surrounded by a moat, which could only be crossed by a plank, which he kept on his side of the ditch. Is it any wonder that he saw his position as a sword forever held above his head, suspended by a single hair?