If you can't explain it simply, you don't understand it well enough.
A journey of a thousand miles begins with a single step.
The way to get started is to quit talking and begin doing.
Don't watch the clock; do what it does. Keep going.
The best time to plant a tree was 20 years ago. The second-best time is now.
The best way to predict the future is to create it.
When you have a hammer, everything looks like a nail.
Don't be pushed around by the fears in your mind. Be led by the dreams in your heart.
The only limit to our realization of tomorrow will be our doubts of today.
It does not matter how slowly you go, as long as you do not stop.
It's not what happens to you, but how you react to it that matters.