Man that is born of a woman hath but a short time to live, and is full of misery. He cometh up, and is cut down, like a flower; he fleeth as it were a shadow, and never continueth in one stay.
Men never cling to their dreams with such tenacity as at the moment when they are losing faith in them and know it, but do not dare confess it to themselves.
No one keeps up his enthusiasm automatically. Enthusiasm must be nourished with new actions, new aspirations, new efforts, new vision. Compete with yourself; set your teeth and dive into the job of breaking your own record. It is one's own fault if his enthusiasm is gone; he has failed to feed it.