Happiness is salutary for the body but sorrow develops the powers of the spirit. - Marcel Proust

I was not unhappy, except one day at a time.

Our worst fears, like our greatest hopes, are not outside our powers, and we can come in the end to triumph over the former and to achieve the latter.

And in myself, too, many things have perished which, I imagined, would last for ever, and new structures have arisen, giving birth to new sorrows and new joys which in those days I could not have foreseen, just as now the old are difficult of comprehension.