Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius and a lot of courage to move in the opposite direction. A person starts to live when he can live outside himself. As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality. Before God we are equally wise and equally foolish.
Common sense is the collection of prejudices acquired by age eighteen.
Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. Education is what remains after one has forgotten everything he learned in school. Equations are more important to me, because politics is for the present, but an equation is something for eternity. Everything should be made as simple as possible, but not simpler.