 ambiguity |  conditionals |  -->Cratylus--> |  Dialectical School |  Diodorus Cronus |  -->Epicureanism--> |  Epicurus |  Hegel, Georg Wilhelm Friedrich: dialectics |  logic: ancient |  -->Megaric School--> |  Socrates |  Sorites paradox |  Stoicism |  -->Zeno of Citium--> |  Zeno of Elea 