In discussing Socrates's argument for Plato's principle of change in the Phaedo, Syrianus asks, To what kind of opposites is Socrates referring? I offer a new answer to Syrianus's question. I start from David Sedley's view that the opposites in question are converse contraries, which behave as converses in comparative contexts. I show that the quantitative pairs that Socrates cites fit Sedley's view because they are implicit comparatives. Nonetheless, I argue that Socrates's evaluative pairs are better understood as asymmetrical opposites (...) because the Phaedo and the Republic reveal that these pairs have independent, not relational, meanings. So my answer to Syrianus's question is that implicit comparatives and asymmetrical opposites are the kinds of opposites to which Socrates is referring. (shrink)

In this paper, I make a case for interpreting the Lysis as a dialogue of definition, designed to answer the question of “What is a friend?” The main innovation of my interpretation is the contention – and this is argued for in the paper – that Socrates hints towards a definition of being a friend that applies equally to mutual friendship and one-way attraction – the two kinds of friend relation very clearly identified by Socrates in the dialogue. The key (...) to understanding how the two different kinds of friendship can have a common definition is to appreciate that the property of being a friend has a relational character. (shrink)