The best hedge against low oil prices is low breakeven costs.
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.
Innovation is the ability to see change as an opportunity, not a threat.
The beauty of computational theory lies in its ability to abstract the complexities of the world into manageable and understandable models.
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
生命的轨迹始于无始的境域，变化形成于相互依存的场所。
My greatest anxiety arises from the apprehension that I shall not be able to complete the work I have undertaken in the manner I wish.