To keep on trying in spite of disappointment and failure is the only way to keep young and brave. Failures become victories if they make us wise-hearted.
When one door of happiness closes, another opens; but often we look so long in disappointment and bitterness at the closed door that we do not expectantly look for and therefore see with pleasure and gratitude the one which has been opened for us.
A child must feel the flush of victory and the heart-sinking of disappointment before he takes with a will to the tasks distasteful to him and resolves to dance his way through a dull routine of textbooks.