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The best way to learn mathematics is to do mathematics.

A picture must be grasped at once, as a whole, like a piece of music or a poem.

"La memoria es el único paraíso del que no podemos ser expulsados."

我相信兒童書(shū)籍應(yīng)該是美麗的物品，值得珍藏和反復(fù)閱讀。

Writing is another way of making love.

"Schreiben ist eine Form des Erinnerns."