* Socrates taught Plato: Socrates, though leaving no writings himself, is known primarily through the writings of his student Plato. Plato's dialogues frequently feature Socrates as the main character, engaging in discussions and questioning others (the Socratic method). The relationship appears to have been deeply influential, with Plato profoundly shaped by Socrates' philosophical approach and ethical concerns.
* Plato taught Aristotle: Aristotle, in his youth, studied under Plato at the Academy in Athens for around twenty years. While Aristotle deeply respected Plato and built upon his work in many ways, he also critically examined and diverged from some of his teacher's ideas, particularly in metaphysics and politics. Their relationship, though initially close, eventually developed some distance as Aristotle pursued his own distinct philosophical path.
In short, the lineage is a clear and influential one: Socrates → Plato → Aristotle. Each philosopher built upon the work of their predecessor, but also developed their own unique perspectives and contributions.