"What good is the warmth of summer, without the cold of winter to give it sweetness."

领导力在于今天做出艰难的决定，以塑造更美好的明天。

化学的艺术在于能够分离、识别并确定构成物质的成分及其数量。

No matter what , just do not give up .Always believe that your dream can come true & just keep working for what you want to achieve.

写作是倾听世界低语的艺术。