One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man. Imagine you only have one year to live. What important things would you be doing? How would you be allotting your time to accomplish the most you could? This exercise is one method of going after your priorities.
Whoever I am and whatever I am doing, some kind excellence is within my reach. Until you try, you do not know what you cannot do. I am only one, but still I am one. I cannot do everything, but still I can do something; and because I cannot do everything, I will not refuse to do something I can do. A man may fall many times but he will not be a failure until he says someone pushed him. You cannot cross the sea merely by standing and staring at the water. Do not let yourself indulge in vain wishes.