请翻译下面一段短文: We live in an ascending scale when we live happily, one thing leading to another in an endless series. There is always a new horizon for onward-looking men, and although we dwell on a small planet, immersed in petty business and not enduring beyond a brief period of years, we are so constituted that our hopes are inaccessible, like stars, and the term of hoping is prolonged unitl the term of life. To be truly happy is a question of how we begin and not of how we end, of what we want and not of what we have.