Sometimes a single battle decides everything and sometimes, too, the slightest circumstance decides the issue of a battle. There is a moment in every battle at which the least manoeuvre is decisive and gives superiority, as one drop of water causes overflow.
My mind is a chest of drawers. When I wish to deal with a subject, I shut all the drawers but the one in which the subject is to be found. When I am wearied, I shut all the drawers and go to sleep.
One must indeed be ignorant of the methods of genius to suppose that it allows itself to be cramped by forms. Forms are for mediocrity, and it is fortunate that mediocrity can act only according to routine. Ability takes its flight unhindered.