优化是在给定约束条件下做出最佳决策的艺术。
The poem is a way of understanding the world, not just explaining it.
The creative process is never the same.
勇气不是没有恐惧，而是尽管恐惧仍选择行动。
The most important thing in a company is people. If you don't get that right, nothing else matters.