This soft question was migrated to academia.SE. As a result, comments are impossible at physics.se, and I find comments to my answer that are alerting me, but I cannot reply to them . I emphatically do not want to register on another site and I see that the questioner also cannot act there unless he/she registers. This is quite annoying and unnecessary for such a simple question. And I do not agree that this is a general question for academia. It is different for lawyers, for example, and all the money gathering disciplines.
Can somebody who is registered there add to the citation request for my statement that "most original ideas come before the age of thirty",
the names of Newton, Maxwell and Feynman , as a start ?. This series of biographies of physicists also supports my statement: http://www.phy.pmf.unizg.hr/~dpaar/fizicari/index.html