Everyone has his own specific vocation or mission in life everyone must carry out a concrete assignment that demands fulfillment. Therein he cannot be replaced, nor can his life be repeated, thus, everyone's task is unique as his specific opportunity to implement it.
The Chinese government wants me to say that for many centuries Tibet has been part of China. Even if I make that statement, many people would just laugh. And my statement will not change past history. History is history.