Sangat sulit untuk dipelajari; sepertinya orang-orang lelah dalam perjalanan menuju pikiran-pikiran besar, dan tidak pernah dapat menikmatinya karena mereka terlalu lelah. Asli: It is very difficult to be learned; it seems as if people were worn out on the way to great thoughts, and can never enjoy them because they are too tired.

— George Eliot