The wise man, after learning something new, is afraid to learn anything more until he has put his first lesson into practice.
LaoziArms are instruments of ill omen.... When one is compelled to use them, it is best to do so without relish. There is no glory in victory, and to glorify it despite this is to exult in the killing of men.... When great numbers of people are killed, one should weep over them with sorrow. When victorious in war, one should observe mourning rites.
Laozi