The office of President is great, but the man who holds it is not.
The principle of asceticism never was， nor ever can be， consistently pursued by any living creature.
"A good picture book should work without any words at all."
超导理论不仅仅是一种特定现象的理论，而是量子凝聚态物质的一般理论。
The success of an enterprise cannot be achieved without accurate judgment of the future and seizing opportunities.
最好的故事是那些在最后一页之后仍久久萦绕在脑海中的故事。