He said that the way of the world is to bloom and to flower and die but in the affairs of men there is no waning and the noon of his expression signals the onset of night. His spirit is exhausted at the peak of its achievement. His meridian is at once his darkening and the evening of his day.

最好的科学是双手弄脏而头脑清醒时完成的。

The truth is often found in contradiction.

追求知识是一段永无止境的旅程，每一个发现都为新的问题打开了大门。