Iroha

'Iroha' is a famous Japanese poem from the 11th century; each hiragana character is used once in it. Read vertically right to left, the poem translates as:

Iro ha nihoheto (Colours are fragrant, but they)
Chirinuru o (Will eventually scatter)
Wa ka yo tane so (Who in our world)
Tsune naramu (Is unchanging?)
Uwi no okuyama (The deep mountains of karma)
Kefu koete (We cross them today)
Asaki yume mishi (And we shall not have superficial dreams)
Wehi mo sesu (Nor be deluded.)