We are what we pretend to be, so we must be careful about what we pretend to be.
The only limit to your impact is your imagination and commitment.
Every discovery opens the door to a thousand new questions.
All wealth is the product of labor.
煤炭的可持续未来取决于我们能否在不牺牲依赖该行业的人的生计的情况下整合更清洁的做法。
The mind is a system of coordinated activities.