理解学习问题的计算复杂性对于开发高效算法至关重要。
Understanding the computational complexity of learning problems is essential for developing efficient algorithms.
绝不是一种不理性的幻想：在未来的存在中，我们会把现在的存在视为一场梦。
徒步旅行的真正魅力不在于行走，也不在于风景，而在于交谈。
You cannot find peace by avoiding life.
Markets are efficient enough that most investors will not outperform the market over the long term.