Gottfried Wilhelm Leibniz (sometimes von Leibniz) (July 1, 1646 - June 21, 1716) was a German mathematician and philosopher.
Leibniz occupies a prominent place in the history of mathematics and the history of philosophy. Leibniz developed the infinitesimal calculus.
For what Go betreft Leibniz wrote an article to a friend in which he refered to the game of go.
That article can he found at http://www.gozillago.net/Leibnitz/deNeufville.html
We now can see how wrong he was about go but still it is nice that he says:
Even though we don't know all the rules, the number of stones and the size of the board make me certain that this game requires very great skill and is extremely difficult. Certainly, it is worth noticing its peculiar manner of play, namely, that the point of the game is not to destroy the opponent but rather only to push him back across the board (unlike in our games). And one can well believe that the creator of this game was some brahmin who abhorred killing and wanted a victory without bloodshed. For it is known that most of the peoples of the East Indies are in these things more Christian than those who call themselves Christian, and as rule avoid killing even in war.
More on leibniz see http://en.wikipedia.org/wiki/Leibniz