In May 2003, an archival database went on-line giving free access to Einstein's scientific and non-scientific documents, correspondences, etc. thanks to the Jewish National & University Library, the Hebrew University of Jerusalem and Cal Tech. This great resource can be found at http://www.alberteinstein.info/.
Answered by:
Joseph Kozminski, M.S., Physics Grad Student, MSU, East Lansing, MI
'The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.'