Keep death in mind
As long as you keep death in mind at all times, you will also fulfill the ways of loyalty and familial duty. You will also avoid myriad evils and calamities, you will be physically sound and healthy, and you will live a long life. What is more, your character will improve and your virtue will grow.
If people comfort their minds with the assumption that they will live a long time, something might happen, because they think they will have forever to do their work and look after their parents-they may fail to perform for their employers and also treat their parents thoughtlessly.
But if you realize that the life that is here today is not certain on the morrow, then when you take your orders from your employer, and when you look in on your parents, you will have the sense that this may be the last time-so you cannot fail to become truly attentive to your employer and your parents. This is why I say you also fulfill the paths of loyalty and familial duty when you keep death in mind.
Bushido Shoshinshu (o El Camino del Guerrero para principiantes),
Daidōji Yūzan (大道寺 友山)
Las negritas son mías.