Vivian Gornick said this quote
“ In Edmund Gosse, Agnes Smedley, Geoffrey Wolff, we have a set of memoirists whose work records a steadily changing idea of the emergent self. But for each of them a flash of insight illuminating that idea grew out of the struggle to clarify one's own formative experience; and in each case the strength and beauty of the writing lie in the power of concentration with which this insight is pursued, and made to become the the writer's organizing principle. That principle at work is what makes a memoir literature rather than testament. ”