The charlatan takes very different shapes according to circumstances; but at bottom he is a man who cares nothing about knowledge for its own sake, and only strives to gain the semblance of it that he may use it for his own personal ends, which are always selfish and material.

Similes, Parables and Fables Parerga and Paralipomena, vol. 2, § 394 - Parerga and Paralipomena (1851)