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Κάλλιστα πειρῶ καὶ λέγειν καὶ μανθάνειν → Bonis dicendis et discendis dato operam → Zu sagen Schönstes und zu lernen mühe dich
for כָּסַל; to be silly: do (make, play the, turn into) fool(-ish, -ishly, -ishness).