A group of onmitsu, government-employed undercover agents, established by the 8th Tokugawa shogun, Tokugawa Yoshimune (1684–1751). Sometimes described as ninja.

the road to happiness is strewn with setbacks

(Buddhism) prajñāpāramitā: the Perfection of (Transcendent) Wisdom / (Buddhism) the body of sutras relating to this subject

Obsolete spelling of エルサルバドル (“El Salvador (a country in Central America)”)

too many cooks spoil the broth