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I know that I can always improve, no matter how good I get.

The best stock to buy is the one you already own.

Tis not contrary to reason to prefer the destruction of the whole world to the scratching of my finger.

Art is a way of making the invisible visible.

賞析：指出知道滿足的人不會被利益所累，真正安閑自得的人不會因為失去而恐懼，注重內心修養的人不會因為沒有地位而慚愧。

最大的力量不在于控制他人，而在于理解他們。

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.