via th.physik.uni-frankfurt.de
In a letter to his son, Einstein wrote, “Life is like a bicycle, to keep your balance your must keep on moving.”
Monday, August 11, 2008
via th.physik.uni-frankfurt.de
In a letter to his son, Einstein wrote, “Life is like a bicycle, to keep your balance your must keep on moving.”
This tumblelog is powered by Tumblr, and was designed by Bill Israel.
