The following graffiti has been scrawled on the bottom of a platform sign at Gunnersbury Underground station:

To be joyous is to be like a madman in a world of dead ghosts.

Turns out it’s a misquote of Henry Miller, who apparently stated:

To be joyous is to be a madman in a world of sad ghosts.

Silly mistake. Whoever heard of a dead ghost? Nevertheless, the scribe was obviously reasonably literate … for a vandal.