“Science is a wonderful thing if one does not have to earn a living at it.”
Albert Einstein (verified)
• Title: Letter to E. Holzapfel
• Author: Albert Einstein
• Type: Letter
• Publisher: Einstein Archive 59-1013 (Non-Scientific Correspondence-H - Folder II), The Hebrew University of Jerusalem
• Publication time: March, 1951
• Link: http://www.albert-einstein.org/archives4.html