 best idea that may occur to those who try to acquire genuine knowledge, if they were educated according to traditional methods, is to doubt if they were taught well and to wish to discover the truth themselves. As they make progress in this search for truth, they cannot avoid noticing that we are full of prejudices, and that it is necessary to get rid of them completely in order to acquire clear and distinct knowledge. (T1en 119; TTfr  53)[1]