A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.
The beauty of mathematics lies in its ability to connect seemingly unrelated ideas.
The only real paradise is a paradise we have lost.
可持续性不再是一个选择，而是一个商业必须。
问题不在于工人效率低下，而在于管理层对他们的需求视而不见。