To arrive at the edge of the world's knowledge, seek out the most complex and sophisticated minds,
put them in a room together, and have them ask each other the questions they are asking themselves.
Links:
[1] http://www.edge.org/news/steven-pinker-how-good-is-the-human-race-after-all
[2] http://is.gd/FFb8bu
[3] http://translate.google.com/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A//www.welt.de/print/die_welt/kultur/article13736374/Steven-Pinker.html