I'm the one who makes me happy.
释义:兵法的要旨在于灵活应变,善于了解和掌握军事的本质,行动之前必须先预测敌人的动向。
The day I stop believing I can win is the day I'll stop playing tennis.
It's often safer to be in chains than to be free.
数学家的工作永无止境;总有新的问题要问,新的谜题要解。