The only certain means of success is to render more and better service than is expected of you, no matter what the task may be. This is a habit followed by all successful people since the beginning of time. Therefore I saith the surest way to doom yourself to mediocrity is to perform only the work for which you are paid.

Opportunities, many times, are so small that we glimpse them not and yet they are often the seeds of great enterprises. Opportunities are also everywhere and so you must always let your hook be hanging. When you least expect it, a great fish will swim by.

I'd rather learn how to prevent failure than how to gain success, because for what is success other than a state of mind?

I will work when failures seek rest.

You learn things in adversity that you would never have discovered without trouble. There is always a seed of hope.

The great difference between those who succeed and those who fail does not consist in the amount of work done by each but in the amount of intelligent work.

You can never win when you wear the ugly cloak of self-pity and the sour sound of whining.