解释：不可以不知道活着的乐趣，也不可以不知道虚度光阴的担忧。

Where there is great love, there are always miracles.

War is not a profession but an experience.

Leadership is about creating an environment where people feel empowered to take risks and learn from failures.

量子力学的本质不在于描述粒子的行为，而在于描述我们对粒子认知的行为。