Socrates' unitary knowledge

Sunday June 7, 2026

• Knowledge

In Plato's Protagoras, written perhaps 385 BCE, Socrates eventually argues that virtue is knowledge: that all virtue is knowing and therefore doing what is right, that "no one does wrong willingly," etc.

virtue is entirely knowledge (Protagoras)

This is different from the four cardinal virtues that Plato later puts in Socrates' mouth.