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To understand the arithmetic of algebraic varieties is to understand the symmetries hidden within them.
The best investment strategy is one that is simple, low-cost, and broadly diversified.
大陆漂移的第一个概念早在1910年就出现在我脑海中,当时我在看世界地图,受到大西洋两岸海岸线吻合的直接印象影响。