You can't let praise or criticism get to you. It's a weakness to get caught up in either one.

The greatest barrier to success is the fear of failure.

The heresy of one age becomes the orthodoxy of the next.

Sooner or later, those who win are those who think they can.

Happiness is not an acquisition - it is a skill.

Great spirits have always encountered violent opposition from mediocre minds.

More often than not, anger is actually an indication of weakness rather than of strength