The pursuit of knowledge is a journey without end, where each discovery opens the door to new mysteries.
The reason they call it an American Dream is because you have to be asleep to believe it.
解读：人生起点、境遇常非自主选择，既然无法更改出身等既定事实，那就积极应对，凭借自身努力在既有条件下创造精彩，发挥主观能动性。