Theodore Roosevelt actually said...

We need, in order successfully to face the difficult and complex problems of our industrial civilization, all the courage and loyalty, and a...

In this life as a rule the job that is easy to do is not very well worth while doing.

Prosperity by itself never made any man happy.

Do your work and do it up to the handle and then play when you have got time to play, and if you are worth anything enjoy that, too.