Instead of always emphasizing what we actually know in science, it would be enormously fruitful to focus on what we do not know. For it is here that the wonders lie. To know is the domain that is safe, where risk taking is no longer necessary. To dwell in it forever is not only to never advance, it is also to promote a deceptive and false view of ourselves as knowing more than we do, of being more powerful that we really are.
-Lewis Thomas, Former President of Sloane Kettering Cancer Institute