Genius is one per cent inspiration and ninety-nine per cent perspiration.
Happiness is only for the honest-that’s a law that runs through matter as undetectable as gravity
I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work.
I am not discouraged, because every wrong attempt discarded is another step forward.
If we did all the things we are capable of doing, we would literally astound ourselves.
