To write is to give shape to the formless.

The challenge of our time is to create a sustainable energy future.

Innovation is the ability to see change as an opportunity, not a threat.

制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子，其中一些中子再次有效地产生裂变。

The key to success is to focus on goals, not obstacles.

个人是唯一的现实。

良心是书中之书。

The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.