“Humans are amphibians...half spirit and half animal...as spirits they belong to the eternal world, but as animals they inhabit time. This means that while their spirit can be directed to an eternal object, their bodies, passions, and imaginations are in continual change, for to be in time, means to change. Their nearest approach to constancy, therefore, is undulation--the repeated return to a level from which they repeatedly fall back, a series of troughs and peaks.”

“Then came nightthat was like falling water.At times, for hours,a bird spirit,half buzzard, half swan,just above the rushesfrom which a snow-storm howls.”

“Nothing changes; we humans repeat the same sins over and over, eternally.”

“It is said that what is called "the spirit of an age" is something to which one cannot return. That this spirit gradually dissipates is due to the world's coming to an end. For this reason, although one would like to change today's world back to the spirit of one hundred years or more ago, it cannot be done. Thus it is important to make the best out of every generation.”

“What’s an “Animus”?’ asked Mad Dog.Literally, it means “animating spirit” – that’s the essence of your core being, the spirit that defines you as a person,' answered Yazuki. 'But it can also mean “animosity” which is why the animal shadows only usually come out in confrontational situations. For centuries, Ninja have looked to the earth for inspiration in ways to live and fight. This is why you see us all giving off animal shadows. We each study the species that mean most to us. We each have an “Animus” that is unique...”

“As a draft-animal is yoked in a wagon, even so the spirit is yoked in this body”