Even the scholars in various lands have been acting as if their brains had been amputated.

It is true that the grasping of truth is not possible without empirical basis. However, the deeper we penetrate and the more extensive and embracing our theories become the less empirical knowledge is needed to determine those theories.

Even the scholars in various lands have been acting as if their brains had been amputated.

It is harder to crack prejudice than an atom.

The only mistake in life is the lesson not learned.

Lasting harmony with a woman (was) an undertaking in which I twice failed rather disgracefully.

He who finds though that lets us penetrate even a little deeper into the eternal mystery of nature has been granted great grace. He who, in addition, experiences the recognition, sympathy, and help of the best minds of his times, had been given almost more happiness than one man can bear.