Youth is not a time of life; it is a state of mind; it is not a matter ofrosy cheeks, red lips and supple knees; it is a matter of the will, a quality ofthe imagination, a vigor of the emotions; it is the freshness of the deepsprings of life.
  Youth means a tempera-mental predominance of courage over timidity, of theappetite for adventure over the love of ease. This often exists in a man of 60more than a boy of 20. Nobody grows old merely by a number of years. We grow oldby deserting our ideals.
  Years may wrinkle the skin, but to give up enthusiasm wrinkles thesoul.
  Worry, fear, self-distrust bows the heart and turns the spring back todust.