Optimism is essential to achievement and is also the foundation of courage and of true progress.

If fear is cultivated it will become stronger if faith is cultivated it will achieve mastery.

Faith that the thing can be done is essential to any great achievement.

Optimism is essential to achievement and it is also the foundation of courage and of true progress.

Full maturity ... is achieved by realizing that you have choices to make.

Optimism is essential to achievement and it is also the foundation of courage and true progress.

Enthusiasm is the mother of effort, and without it nothing great was ever achieved.

Those who dare to fail miserably can achieve greatly.

Every great achievement is but a small peak in the mountain range of contributions.

Success isn't something you achieve by accident, but rather by design.