对称性是降低复杂性的概念(协同例程包括子例程);到处寻找它。
Symmetry is a complexity-reducing concept (co-routines include subroutines); seek it everywhere.
The body remembers what the mind tries to forget.
The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they believe it will bring them strategic advantage.