The only path by which another person can upset you is through your own thought.

Logic will get you from A to Z, imagination will get you everywhere.

Thinking is the talking of the soul with itself.

Change your thoughts, and you change your destiny.

Knowing yourself is the beginning of all wisdom.

When education and resources are available to all without a price tag, there will be no limit to the human potential.

Happiness depends upon ourselves.

The highest possible stage in moral culture is when we recognise that we ought to control our thoughts.

To avoid criticism say nothing, do nothing, be nothing.