When one sees a great scientist a bracha is made - שנתן מחכמתו לבשר ודם. But only if he is a Goy. On a Jewish scientist no bracha is made. Why? Because that same brain could have been used for what is עיקר - Torah and was instead used for something טפל. We don't make bracha on טפל items. In Pachad Yitzchak [חנוכה מאמר ט] there is a brilliant exposition on the difference between Torah knowledge and secular knowledge עיי"ש.
Here is the rousing finale!!
