Success is not final, failure is not fatal: it is the courage to continue that counts.

The chemical industry is the backbone of modern civilization, and we must treat it with the responsibility it deserves.

在困难中蕴含着机会。

I am the only person in the world I should like to know thoroughly; but I don’t see any chance of it just at present.

Don't have good ideas if you aren't willing to be responsible for them.

I'm mentioning all this -- I'm mentioning all this because I think this is not merely a personal problem; you may think I'm wrong in this, but I think we live in an age when our lives are regularly punctuated by career crises, by moments when what we thought we knew -- about our lives, about our careers -- comes into contact with a threatening sort of reality.