To do exactly the opposite of something is also a form of imitation, namely an imitation of its opposite.

Georg C. Lichtenberg (1742-1799) German physicist, writer

Aphorisms, Notebook D, #96 [p. 604] (1773-75) [tr. Tester (2012)]
    (Source)

Alternate translations:

• "To do just the opposite is also a form of imitation." [tr. Mautner and Hatfield]
• "To do the opposite of something is also a form of imitation, namely an imitation of its opposite." [tr. Hollingdale (1990)]