The real wisdom here isn't a call to skepticism—it's an argument against the false comfort of certainty. Euripides recognized that the moment you claim to have *answered* something, you've stopped growing; you've mistaken a temporary understanding for permanent truth. A scientist who spends thirty years investigating a disease, publishing papers and training others, never declares herself finished—that refusal to close the book is what keeps her work honest and her mind alive. The quote asks us to hold our convictions lightly, even the ones we're most proud of, so that tomorrow's question can still surprise us.