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出自《海國圖志·卷首》。地氣和天時變化了，那么歷史的體例也應(yīng)隨著時代的變化而變化。

追求完美的想法，是一個好計劃的最大敵人。

"In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs."

"The task of the writer is to make the invisible visible."

We are here to add what we can you to life，not to get what we can from it.