Hermann Minkowski Inspirational Quotes (3)

The mathematical education of the young physicist [Albert Einstein] was not very solid, which I am in a good position to evaluate since he obtained it from me in Zurich some time ago.

Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality.

Heaven is angered by my arrogance my proof [of the four-color theorem] is also defective.