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Mathematics is a way of thinking, not just a collection of facts.

唯一比思想的力量更偉大的是心靈的勇氣。

我們必須在經濟、政治、軍事和技術上強大。

Time isn't a line; it's a dimension, like the dimensions of space.

The best thing about getting older is that you don't lose all the other ages you've been.

邪惡勝利的唯一必要條件是好人無所作為。