Always keep your knife sharp, your wits sharper, and your spirit sharpest.

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

Art is not about answers, it's about questions.

Advice like these are not laws. They are like hats. If one doesn’t fit， try another.

The beauty of a woman is not in a facial mode but the true beauty in a woman is reflected in her soul. It is the caring that she lovingly gives the passion that she shows. The beauty of a woman grows with the passing years.

天然气是帮助我们实现低碳未来的桥梁燃料。