Bertrand Russell: Ten Commandments of Teaching
1: Do not feel absolutely certain of anything.
2: Do not think it worthwhile to produce belief by concealing evidence, for the evidence is sure to come to light.
3: Never try to discourage thinking, for you are sure to succeed.
4: When you meet with opposition, even if it should be from your husband or your children, endeavor to overcome it by argument and not by authority, for a victory dependent upon authority is unreal and illusory.
5: Have no respect for the authority of others, for there are always contrary authorities to be found.