What lies behind us and what lies before us are tiny matters compared to what lies within us.
The greatest glory in living lies not in never falling, but in rising every time we fall.
The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.
The way to overcome negative thoughts and destructive emotions is to develop opposing, positive emotions that are stronger and more powerful.
The good life is a process, not a state of being. It is a direction, not a destination.
You know you're a psychologist when you analyze your friends instead of just enjoying their company.
Everything that irritates us about others can lead us to an understanding of ourselves.
The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind.