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Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen.

You can't control the waves, but you can learn to sail in any weather.

Safety isn't a priority—it's a value. You can't prioritize something that should never be compromised.

The beauty of chemistry lies in its ability to explain the world at the molecular level.

承諾最慎重的人是履行承諾最忠實(shí)的人。