The evil effect of science upon men is principally this, that by far the greatest number of those who wish to display a knowledge of it accomplish no improvement at all of the understanding, but only a perversity of it, not to mention that it serves most of them as a tool of vanity.

Part III : Selection on Education from Kant's other Writings, Ch. I Pedagogical Fragments, # 52 - The Educational Theory of Immanuel Kant (1904)