Faith in Reason

Faith in reason is not only faith in our own reason but also -- and even more -- in that of others. Thus a rationalist, even if he believes himself to be intellectually superior to others, will reject all claims to authority since he is aware that, if his intelligence is superior to that of others (which is hard for him to judge), it is so only in so far as he is capable of learning from criticism as well as from his own and other people's mistakes, and that one can learn in this sense only if one takes others and their arguments seriously. Rationalism is therefore bound up with the idea that the other fellow has a right to be heard, and to defend his arguments.

-- Karl B. Popper