The diamond cannot be polished without friction, nor the man perfected without trials.

The biggest failure you can have in life is not trying at all.

The diamond cannot be polished without friction, nor the man perfected without trials.

A person who says it cannot be done should not interrupt the man doing it.

Whatever the mind can conceive and believe, the mind can achieve.

My son is now an ‘entrepreneur’. That’s what you’re called when you don’t have a job.

Defeat isn’t bitter if you don’t swallow it.

Failure defeats losers, failure inspires winners.

You cannot depend on your eyes when your imagination is out of focus.