Innovation is essential for the development of an enterprise; it must constantly bring forth new ideas.

Efficiency is the first virtue of engineers.

Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.

忽视环境影响的生产力指标只是会计把戏，而非真正的进步。