I was moved

http://www.nicovideo.jp/watch/sm1309708
http://www.nicovideo.jp/watch/sm1310282
http://www.nicovideo.jp/watch/sm1310655
http://www.nicovideo.jp/watch/sm1310960


Devil of math is awful :-|
But, is fascinating too :-)


I also should learn math and phisics more hard ;-)
I think learning math or phisics or other academics is good for my work if they don't have something with it.
Because I think that they have invisible relation or analogy with each other :-)