Arnold Sommerfeld Professions : Physicist Born : December 5, 1868 Died : April 26, 1951 Browse All Authors Top 3 quotes by Arnold Sommerfeld Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so used to it, it doesn't bother you any more. Arnold Sommerfeld two firsts thinking If you want to be a physicist, you must do three things-first, study mathematics, second, study more mathematics, and third, do the same. Arnold Sommerfeld three want science Mathematics is like childhood diseases. The younger you get it, the better. Arnold Sommerfeld childhood disease children Similar Authors Gabriel Lippmann physicist Burton Richter physicist Bruno Rossi physicist Bruce Maccabee physicist Brian Cox physicist Allan McLeod Cormack physicist All Authors