Denken / Think Dinge / Things Kann nicht / Cannot Muss / Must Sie / You
You cannot shake hands with a clenched fist.
You can do what you think you can do and you cannot do what you think you cannot.
To know one thing, you must know the opposite.
If you think you can do a thing or think you can't do a thing, you're right.
The next point - that's all you must think about.
If you have it and you know you have it, then you have it. If you have it and don't know you have it, you don't have it. If you don't have it but you think you have it, then you have it.
Don't think that the things around you don't count, because they do.
I think the most un-American thing you can say is, 'You can't say that.'
You cannot win if you cannot run.