Nobody on the face of the earth can make you feel inferior without your permission.

Far too many people have no idea of what they can do because all they have been told is what they can't do. They don't know what they want because they don't know what's available for them.

We should never let our experience influence what we think about our potential.

You cannot go higher than you think you can.

We can let our past [difficulties and failures] beat us or teach us [to be more knowledgeable, competent and realistic in the future]!

Success doesn't make you and failure doesn't break you.

There is no such thing as a lazy person; he is either sick or uninspired.