吾 唯 足 知 can translate to 'what one has is all one needs' or 'I learn only to be contented'.
The original, donated by Tokugawa Mitsukuni (徳川光圀 1628-1701) around 1660, is actually located beside Zōroku-an (蔵六庵) tearoom (out of sight).
#Japan #Kyoto #竜安寺 #蔵六庵