  On the topic of ambiguity, Diodorus held that no linguistic expression is ambiguous. He supported this dictum by a theory of meaning based on speaker intention. Speakers generally intend to say only one thing when they speak. What is said when they speak is what they intend to say. Any discrepancy between speaker intention and listener decoding has its cause in the obscurity of what was said, not its ambiguity (Aulus Gellius 11.12.2–3).