For ten points, name the physicist who stated that matter and energy were equivalent.
The FBI advised against his immigration, alleging that he "believe[d] in … a doctrine which … 'would allow anarchy to stalk in unmolested.'" He did, however, wind up in America and wrote a letter to FDR suggesting the development of nuclear bombs. In 1905, his annus mirabilis, he wrote papers on Brownian motion, the photoelectric effect, and relativity, the second of which won him a Nobel Prize. For ten points, name the physicist who stated that matter and energy were equivalent.
The FBI advised against his immigration, alleging that he "believe[d] in … a doctrine which … 'would allow anarchy to stalk in unmolested.'
Albert {Einstein}