One however, eluded him. Another scientist writes, "Einstein, who had already united space, time and gravity in his theories, certainly believed this and spent the latter half of his life seeking -- unsuccessfully -- 'a theory of everything' that would combine quantum physics and relativity" (Mckie)
He did not have many friends, and he mostly enjoyed the company of other adults. He read serious texts rather than literature, and enjoyed philosophical discussions with family friends (Pais 37-38)
. Never forget this in the midst of your diagrams and equations" (Schilpp 649), and believes this sums up Einstein's personal philosophy, that humankind is more important than facts and knowledge