Motivation without a doubt is the key to success. Combined with hard work, talent and determination you get the formula that will make your dreams come true. Motivation is not only crucial when it comes to achieving your business goals but it is also important in every aspect of life and can improve it and direct it to a better future.

Today’s most influential leaders and entrepreneurs wouldn’t be where they are without the strong force that motivation is. Check out our list of 21 motivational quotes from the world’s most influential leaders past and present.