If the essential concept of Socrates was the Good, and the essential concept of Parmenides Being, Euclides now combined the two. The Good is identified with Being. Being, the One, God, Intelligence, providence, the Good, divinity, are merely different names for the same thing. Becoming, the many, evil, are the names of its opposite, not-being. Multiplicity is thus identified with evil, and both are declared illusory.
Evil has no real existence.
The good alone truly is. The various virtues, as benevolence, temperance, prudence, are merely different names for the one virtue, knowledge of being.