People always think that loyalty is laudable. People are always saying that we must remain faithful to tradition, to family, to our class, to our ideas. Of course not! That would be equivalent to zero brain activity. If you really want to think, to seek truth, to advance intellectually, you must turn your back on clichés, on preconceived ideas - even those belonging to your spiritual family. For an intellectual, his true duty is not to fidelity, but to infidelity.