Letter of Albert Einstein to his daughter

In the late 1980s, Lieserl, the daughter of the famous genius, donated 1,400 letters, written by Einstein, to the Hebrew University, with orders not to publish their contents until two decades after his death. This is one of them, for Lieserl Einstein.
“When I proposed the theory of… – http://sonofearth.org/philosophy/letter-of-albert-einstein-to-his-daughter/