Wonderful quote! Attribution to Albert Einstein, while popular, is apocryphal. More likely it's attributed to Alexandre Dumas, fils (27 July 1824 – 27 November 1895).
"Une chose qui m’humilie profondément est de voir que le génie humain a des limites, quand la bêtise humaine n’en a pas."
One possible translation into English is the following:
"One thing that humbles me deeply is to see that human genius has its limits while human stupidity does not."