I am trying to read The Mind's New Science: A History of the Cognitive Revolution by Howard Gardner. The title of chapter 1 is "Introduction: What the Meno Wrought". I don't understand what the chapter title means. The chapter also has, as an epigram, this quotation from Plato's dialogue, the Meno, that I don't understand:
One thing I would fight for to the end, both in word and deed if I were able—that if we believed that we must try to find out what is not known, we should be better and braver and less idle than if we believed that what we do not know it is impossible to find out and that we need not even try.
Could you explain these sentences a little for me, please?