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Does it not appear to you versatility is the true and rare characteristic of that rare thing called genius-versatility and playfulness? In my mind they are both essential.

Mary Russell Mitford (1870). “The Life of Mary Russell Mitford ; Related in an Selection from Her Letters to Her Friends. Ed. by A.G. Estrange”, p.238
Does it not appear to you versatility is the true and rare characteristic of that rare thing called genius-versatility and playfulness? In my mind they are both essential.