In catalysis, sometimes the smallest modification can lead to the biggest breakthroughs.

书籍是最安静、最恒久的朋友；它们是最易接近、最睿智的顾问。

The problem isn't that Johnny can't read. The problem isn't even that Johnny can't think. The problem is that Johnny doesn't know what thinking is; he confuses it with feeling.

The act of writing is an act of optimism.

逻辑法则不是心理法则，而是真理的法则。