The simplest drawings can often carry the deepest emotions.

Technology is not just a tool. It can give learners a voice that they may not have had before.

Changing the destructive things you say to yourself when you experience the setbacks that life deals all of us is the central skill of optimism.

Quality is never an accident; it is always the result of intelligent effort.

The pursuit of mathematical truth is a deeply personal and profoundly universal endeavor.

"Writing is a way of talking without being interrupted."

The dead are more faithful than the living. They do not change.