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Finding truth is difficult, and the road to it is rough. As seekers after truth, you will be wise to withhold judgement and not simply put your trust in the writings of the ancients. You must question and critically examine those writings from every side. You must submit only to argument and experiment and not the sayings of any persons. For every human being is vulnerable to all kinds of imperfection. As seekers after truth, we must also suspect and question our own ideas as we perform our investigations, to avoid falling into prejudice or careless thinking. Take this course, and truth will be revealed to you.