——《在上海南京路同盟会机关的演说》（1912年4月16日）
所谓的理解，往往不过是误解的广泛流传。
抗战将是漫长而艰苦的，但我们的事业是正义的，我们必将胜利。
永远不要停止提问——进步就从那里开始。
Stories you read when you're the right age never quite leave you. You may forget who wrote them or what the story was called. Sometimes you'll forget precisely what happened, but if a story touches you it will stay with you, haunting the places in your mind that you rarely ever visit.
夜晚并没有隐藏世界；它揭示了另一个世界。
Natural experiments are a powerful tool for understanding causal relationships in the real world.