The joy of discovery in mathematics is unparalleled.
我们必须拥抱新技术和新理念，否则将在快速变化的能源格局中落后。
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
译文：即使处在平安的环境，也要时刻想到可能会有突如其来的危险。
"Purpose is what gives meaning to profit."