When I am working on a problem I never think about beauty. I only think about how to solve the problem. But when I have finished; if the solution is not beautiful; I know it is wrong.
Thou mayest as well expect to grow stronger by always eating, as wiser by always reading. Too much overcharges Nature, and turns more into disease than nourishment. 'Tis thought and digestion which make books serviceable, and give health and vigor to the mind.