"In every ending, there is a beginning waiting to be discovered."

投资更清洁的煤炭技术是对能源未来的投资。

Mathematics is a collaborative endeavor. No one does it alone.

The only real life is the life of the mind.

The clouds over the land now rose like mountains, and the coast was only a long green line with the gray blue hills behind it. The water was a dark blue now, so dark that it was almost purple.