If you think you are the entire picture, you will never see the big picture.
A big man is one who makes us feel bigger when we are with him.
If you want to do something really big, do it as part of a team.
Big-picture thinkers broaden their outlook by striving to learn from every experience. They don't rest on their successes, they learn from them.
If you want to do a few small things right, do them yourself. If you want to do great things and make a big impact, learn to delegate.