卡塞尔文献展必须始终是一个问题，而不是一个答案。

我不害怕变老。我认为变老是一种特权。

"We are all in the gutter, but some of us are looking at the stars."

未来属于那些拥抱变化的人。

Uncertainty is not the absence of information, but the presence of too much conflicting information.

One does not learn computing by using a hand calculator, but one can forget arithmetic.