Preserve in everything freedom of mind. Never spare a thought for what men may think, but always keep your mind so free inwardly that you could always do the opposite. For by doubting we come to inquiry, and by inquiry we arrive at truth. The most dangerous tendency of the modern world is the way in which bogus theories are given the force of dogma. Outside the practice of science itself, scientists have sometimes been the greatest offenders in adhering to dogmatic ideas against all the evidence.
True Science teaches, above all, to doubt, and to be ignorant.
In science, self-satisfaction is death. Personal self-satisfaction is the death of the scientist. Collective self-satisfaction is the death of the research. It is restlessness, anxiety, dissatisfaction, agony of mind that nourish science. Faith seems to be an occupational hazard for physicists.