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Optimism is infectious, and opportunity irresistible. Progress follows progress. Someone, even government, just has to get it started.

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.

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

I think being optimistic is ensuring your success. If you start out saying 'I've got this problem,' or 'I'm angry at that,' you will not succeed.

Hope is favorable and confident expectation; it's an expectant attitude that something good is going to happen and things will work out, no matter what situation we're facing.

There are really two kinds of optimism. There's the complacent, Pollyanna optimism that says, 'Don't worry - everything will be just fine,' and that allows one to just lay back and do nothing about the problems around you. Then there's what we call dynamic optimism. That's an optimism based on action.

I'm naturally an optimist, but my basis for hope is rooted in my understanding of human nature.

Hope is a state of mind, not of the world. Hope, in this deep and powerful sense, is not the same as joy that things are going well, or willingness to invest in enterprises that are obviously heading for success, but rather an ability to work for something because it is good.

The essence of optimism is that it takes no account of the present, but it is a source of inspiration, of vitality and hope where others have resigned; it enables a man to hold his head high, to claim the future for himself and not to abandon it to his enemy.