必须容许孩子选择物品，这可以让原来的发展得以持续，清除孩子尚无意识的心智之间的障碍。

We are like islands in the sea， separate on the surface but connected in the deep.

The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.

预测未来的最好方式就是创造它。

无论成本如何，质量永远不应妥协。