人都知道说话可以显示自己的优点,但不知说话谨慎可以培养德性;人都知道饮食可以有益生命,却不知节制饮食可以养生。
The advancement of mathematics is through the continuous questioning of established truths.
The only way to make sense out of change is to plunge into it, move with it, and join the dance.