“Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.”
"A Liberal Decalogue" http://www.panarchy.org/russell/decalogue.1951.html, from "The Best Answer to Fanaticism: Liberalism", New York Times Magazine (16/December/1951); later printed in The Autobiography of Bertrand Russell (1969), vol. 3: 1944-1967, pp. 71-2 <br class="br">1950s <br class="br">Context: The Ten Commandments that, as a teacher, I should wish to promulgate, might be set forth as follows:<br>1. Do not feel absolutely certain of anything.<br>2. Do not think it worth while to proceed by concealing evidence, for the evidence is sure to come to light.<br>3. Never try to discourage thinking for you are sure to succeed.<br>4. When you meet with opposition, even if it should be from your husband or your children, endeavour to overcome it by argument and not by authority, for a victory dependent upon authority is unreal and illusory.<br>5. Have no respect for the authority of others, for there are always contrary authorities to be found.<br>6. Do not use power to suppress opinions you think pernicious, for if you do the opinions will suppress you.<br>7. Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.<br>8. Find more pleasure in intelligent dissent that in passive agreement, for, if you value intelligence as you should, the former implies a deeper agreement than the latter.<br>9. Be scrupulously truthful, even if the truth is inconvenient, for it is more inconvenient when you try to conceal it.<br>10. Do not feel envious of the happiness of those who live in a fool's paradise, for only a fool will think that it is happiness.