In 1925 - 27 the revolution in China was destroyed by the false revolutionary strategy of the Stalinist faction. To this last question I consecrate my book, Problems of the Chinese Revolution (issued by the Pioneer Publishers, New York 1932).
A convention was drawn up on June 17, 1925, in which the principle of supervision, as opposed to that of simple propaganda, was recognized, thanks to the efforts of the labour members, of whom I was one.
I can look back. . . at two distinct periods of opinion whose foundations I have successively come to distrust a period before 1919 or so, when the weight of classic authority unduly influenced me, and another period from 1919 to about 1925, when I placed too high a value on the elements of revolt, florid colour, and emotional extravagance or intensity.
[Heisenberg's seminal 1925 paper initiating quantum mechanics marked] one of the great jumps—perhaps the greatest—in the development of twentieth century physics.
I first met the subject of X-ray diffraction of crystals in the pages of the book W. H. Bragg wrote for school children in 1925, Concerning the Nature of Things.
