I never could have done what I have done without the habits of punctuality, order, and diligence, without the determination to concentrate myself on one subject at a time.
Where the world ceases to be the scene of our personal hopes and wishes, where we face it as free beings admiring, asking and observing, there we enter the realm of Art and Science.
No matter how insignificant the thing you have to do, do it as well as you can, give it as much of your care and attention as you would give to the thing you regard as most important. For it will be by those small things that you shall be judged.