On the limit of justifiable defense, every country experienced a long and complicated process from loose restriction to narrow restriction, and then to loose again.

• 在古今中外的刑事立法上，国家在对正当防卫的强度问题上，都经历了从限制过宽到限制较严，再从限制较严到放宽限制这样一个复杂而漫长的演变过程。