释义：有了过错却不知道的人是被蒙蔽，迷失了方向还不返回的人是迷惑。这是对自知之明与迷途知返重要性的阐述。

We kid ourselves if we think that the ratio of procedure to data in an active data-base system can be made arbitrarily small or even kept small.

All good writing is swimming under water and holding your breath.

Innovation is the key to the future of coal industry, we must embrace new technologies and ideas.

The simplest solutions are often the most elegant.

Matter is divisible ad infinitum, while form is indivisible.