If you have choices, choose the best. If you have no choice, do the best.
如果有选择，那就选择最好的；如果没有选择，那就努力做到最好。
According to my own experience, our future often depends on our choices, not our abilities.
However, knowing how to make the most suitable choice is also a kind of ability.
It needs training, considerable amounts of training.
All that is necessary for the triumph of evil is that good men do nothing.
欲使恶人得胜，只需好人袖手旁观。
From Edmund Burke.
Some brief knowledge about the boost library.