Genius is one percent inspiration and ninety-nine percent perspiration.
Your worth consists in what you are and not in what you have.
The chief function of the body is to carry the brain around.
When you have exhausted all possibilities, remember this: you haven’t.
There is no substitute for hard work.
Our greatest weakness lies in giving up. The most certain way to succeed is...
The three great essentials to achieve anything worthwhile are, first, hard...
The value of an idea lies in the using of it.