Sander van Heukelom combines typographic design, graffiti and sculpting into unique pieces of 3D graffiti (He uses styrofoam, plexiglass, synthetic resin and wood).
This one above, Quod dubitas, ne feceris - Latin for "when you doubt, do not act" - is probably a concept most graffiti artists do not recognize.
Check out the rest of Sander's artwork here: Link [Flash] - via Rue The Day!