The present system of paying for every sort of service was not in vogue among the adherents of Bushido. It believed in a service which can be rendered only without money and without price. Spiritual service, be it of priest or teacher, was not to be repaid in gold or silver, not because it was valueless but because it was invaluable. Here the non-arithmetical honor-instinct of Bushido taught a truer lesson than modern Political Economy; for wages and salaries can be paid only for services whose results are definite, tangible and measurable, whereas the best service done in education - namely, in soul development (and this includes the services of a pastor), is not definite, tangible or measurable.

spirituality
Bushido by Inazo Nitobe