Elizabeth Von Arnim said this quote

Nobody told me about him [my grandfather], and he died when I was six, and yet within the last year or two, that strange Indian summer of remembrance that comes to us in the leisured times when the children have been born and we have time to think, has made me know him perfectly well. It is rather an uncomfortable thought for the grown-up, and especially for the parent, but of a salutary and restraining nature, that though children may not understand what is said and done before them, and have no interest in it at the time, and though they may forget it at once and for years, yet these things that they have seen and heard and not noticed have after all impressed themselves for ever on their minds, and when they are men and women come crowing back with surprising and often painful distinctness, and away frisk all the cherished little illusions in flocks.