Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Work while others are wishing.

The secret to success is to make your vocation your vacation.

I think work is the world's greatest fun.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

The First 40 hours of work per week are for survival. Everything after that is for success.