Notices of the International Consortium of Chinese Mathematicians

This article was written upon a strong request of Prof. Yau. Among all the mathematicians I know, he is the most youthful according to the definition by Samuel Ullman above: Youth means a temperamental predominance of courage over timidity of the appetite, for adventure over the love of ease. This often exists in a man of sixty more than a boy of twenty. Nobody grows old merely by a number of years. We grow old by deserting our ideals.