Courage is not having the strength to go on, it is going on when you don't have the strength. Industry and determination can do anything that genius and advantage can do and many things that they cannot.
The heights by great men reached and kept were not attained by sudden flight, but they, while their companions slept, were toiling upward in the night.
I shall do less whenever I shall believe what I am doing hurts the cause and I shall do more whenever I shall believe doing more will help the cause. I shall try to correct errors when shown to be errors and I shall adopt new views so fast as they shall appear to be true views.
A good leader is not necessarily the most popular person in their business, but the best ones are liked because they are respected for their clarity and vision.
Never lose a holy curiosity. Try not to become a man of success but rather try to become a man of value. He is considered successful in our day who gets more out of life than he puts in. But a man of value will give more than he receives.