We must, however, acknowledge, as it seems to me, that man with all his noble qualities still bears in his bodily frame the indelible stamp of his lowly origin.  
我的父亲是我最好的朋友和最伟大的榜样。
技术和创新将是减少排放同时满足全球能源需求的关键驱动力。
The more constraints one imposes, the more one frees oneself.