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We know you have plenty of work to do. That’s why we’re here: to give you the inspiration you need to complete your work in less time. So we won’t take much of your time — no descriptive, flowery quotes, just straight talk.

Here are 15 excellent productivity quotes from the world’s most successful people.

1. “The way to get started is to quit talking and begin doing.”

Walt Disney

2. “It is not enough to be busy… The question is: what are we busy about?”

Henry David Thoreau

3. “Whether you think you can or whether you think you can’t, you’re right!”

Henry Ford

4. “The critical ingredient is getting off your butt and doing something. It’s as simple as that. A lot of people have ideas, but there are few who decide to do something about them now. Not tomorrow. Not next week. But today.”

Nolan Bushnell

5. “Nothing is less productive than to make more efficient what should not be done at all.”

Peter Drucker

6. “If you don’t pay appropriate attention to what has your attention, it will take more of your attention than it deserves.”

David Allen

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7. “There’s a tendency to mistake preparation for productivity. You can prepare all you want, but if you never roll the dice you’ll never be successful.”

Shia LaBeouf

8. “A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.”

George Bernard Shaw

9. “Productivity is never an accident. It is always the result of a commitment to excellence, intelligent planning, and focused effort.”

Paul J. Meyer

10. “There are risks and costs to action. But they are far less than the long range risks of comfortable inaction.”

John F. Kennedy

11. “Amateurs sit and wait for inspiration, the rest of us just get up and go to work.”

Stephen King

12. “No matter how great the talent or efforts, some things just take time. You can’t produce a baby in one month by getting nine women pregnant.”

Warren Buffett

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13. “Concentrate all your thoughts upon the work in hand. The sun’s rays do not burn until brought to a focus.”

Alexander Graham Bell

14. “In a society that judges self-worth on productivity, it’s no wonder we fall prey to the misconception that the more we do, the more we’re worth.”

Ellen Sue Stern

15. “I always had the uncomfortable feeling that if I wasn’t sitting in front of a computer typing, I was wasting my time — but I pushed myself to take a wider view of what was “productive.” Time spent with my family and friends was never wasted.”

Gretchen Rubin