Complex sentence: In 1932 he enrolled at Harvard for a Ph.D. in economics; for his thesis, Joseph Schumpeter suggested the question of the intrinsic value of a common stock, for which Williams' personal experience and background would serve him in good stead.
Split into simpler sentences: In 1932 he enrolled at Harvard for a Ph.D. in economics. For his thesis, Joseph Schumpeter suggested that Williams study the question of the intrinsic value of a common stock, for which Williams' personal experience and background would serve him in good stead.