Learning from adversity

I first came across the following quotation when I was quite young - early twenties, I think. It inspired and encouraged me then and it still does today:

I do not believe that sheer suffering teaches. If suffering alone taught, all the world would be wise, since everyone suffers. To suffering must be added mourning, understanding, patience, love, openness, and a willingness to remain vulnerable.

-- Anne Morrow Lindbergh