数学让我们看到支配周围世界的隐藏结构。
The key to successful investing is to have a clear understanding of the market, the risks involved, a disciplined approach, a long-term perspective, and a strong understanding of the fundamentals.
The greatest tragedy is not death, but forgetting one's mother tongue.
The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.
