Analysis of information sources in references of the Wikipedia article "Protrepticus (Aristotle)" in English language version.
The dialogues [of Plato] not only embody the famous "oracular" and "paradoxical" statements emanating from Socrates ("virtue is knowledge", "nobody does evil knowingly", "it is better to suffer than to commit injustice") and are, to a large extent, protreptic plays based on these, but they also discuss and state, more or less explicitly, the ultimate foundations on which those statements rest and the far-reaching consequences which flow from them. )
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