The beauty of it is that we have to content ourselves with the recognition of the miracle, beyond which there is no legitimate way out.
Albert EinsteinI am exclusively occupied with the problem of gravitation and hope with the help of a local mathematician friend [Marcel Grossman] to overcome all the difficulties. One thing is certain, however, that never in life have I been quite so tormented. A great respect for mathematics has been instilled within me, the subtler aspects of which, in my stupidity, I regarded until now as pure luxury.
Albert Einstein