In his later years Einstein was dismissed as a stubborn old fool because of his futile search of a unified field theory and yet - contemporary theoretical physics is dominated by what are known as String theories.
They are geometrical -the interactions of one multi-dimensional shape with another produces the effects we call forces, just as the 'force' of gravity in general relativity is what we feel as we move through the curves of four-dimensional space-time. And they unify, no doubt about it: in mathematics, at least, all of nature from quantum mechanics to gravity emerges from the equations of string theory.
As it stands, string theories are unproved, and perhaps improvable, as they involve interactions at energy levels far beyond any we can handle. But they are beautiful, to those versed enough in the language of mathematics to follow them. And in their beauty (and perhaps in their impenetrability) they are the heirs to Einstein's attempts to produce a unified field theory.
On Japan in 1925 :
On Russia in 1932 :
On McCarthyism in 1953 :
- a stance admired by most people today, but not at the time, as an editorial reply in The Washington Post concluded:
'Somebody who reads only newspapers and at best books of contemporary authors looks to me like a near-sighted person who scorns eyeglasses. He is completely dependent on the prejudices and fashions of his times, since he never gets to see or hear anything else. And what a person thinks on his own without being stimulated by the thoughts of other people is even at the best case rather monotonous. We owe it to a few writers of antiquity that the people of the Middle Ages could slowly extricate themselves from the superstitions and ignorance that had darkened life for more than half a millennium. Nothing is more needed to overcome the modernist's snobbishness.'