是印度给了我们表达所有数字的巧妙方法，通过十个符号，每个符号既有位置值也有绝对值。
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.
"I’m a normal guy who just happens to play tennis well."
Change is hardest in the beginning, messiest in the middle, and best at the end.
出自汉·桓宽《盐铁论·险固》。这句话以“地利”与“人和”、“武力”与“文德”的对比，阐明了实行仁政对于治国安邦的重要性。