发现的快乐无疑是推动科学前进的动力。

Psychology must be based on observable facts, not speculation.

The study of the early universe is not just about understanding the past, but also about uncovering the fundamental laws that govern all of reality.

"El escritor es un testigo de su tiempo, y su obra es el reflejo de la sociedad en la que vive."

Freedom is a heavy load, a great and strange burden for the spirit to undertake.