The people must fight for their laws as for their walls.
All things come into being by conflict of opposites.
No one can step twice into the same river, nor touch mortal substance twice in the same condition. By the speed of its change, it scatters and gathers again.
One must know that war is common, justice is strife, and everything happens according to strife and necessity.
Because it is so unbelievable, the Truth often escapes being known.
There is nothing permanent except change.