structural:reformatting, quality:correction
Marginal utility

Unlike other historicists, Weber accepted marginal utility and taught it to his students. His overall economic sociology was based on it. In 1908, Weber published an article, "Marginal Utility Theory and 'The Fundamental Law of Psychophysics'", in which he argued that marginal utility and economics were not based on psychology. As part of that, he disputed Lujo Brentano's claim that marginal utility reflected the form of the psychological response to stimuli as described by the Weber–Fechner law. He rejected the idea that marginal utility and economics were dependent on psychophysics. In general, Weber disagreed with the idea that economics relied on another field. He also included a similar discussion of marginal utility in the second chapter of Economy and Society. Both marginal utility and declining utility's roles in his writings were implied through his usage of instrumentally rational action in that chapter.