The best way to predict the future of chemistry is to invent it.

The invention of the cotton gin was the result of necessity and observation.

The hardest part of designing a system is deciding what to build.

悠闲自得，是出于专心勤奋；淡泊安适，是出于恭敬畏惧；无思无虑，是出于善于思考；胆大无畏，是出于小心翼翼。