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領導力就是為更美好的明天做出艱難的決定。

Nothing is certain， and nothing is impossible.

The beauty of chemistry is that it's everywhere—you just have to look for it.

The best way to make people happy is to make them laugh.

導師的職責是指導孩子的智能活動和孩子的心理。

My scientific studies have afforded me great satisfaction; and I am convinced that it will not be long before the whole world acknowledges the results of my work.

I paint not to escape reality, but to confront it.