The experience of climbing the terraces of Borobudur is a powerful one. As you emerge from the enclosed corridors of the lower terraces, into the clear open spaces above, surrounded only by a circle of volcanoes, you are very conscious of having entered a different world. Even the most hardened tourist has the sense that this is not a site visit, but a pilgrim's progress. The builders of Borobudur understood perfectly how stone can shape thought.
Stone, all physical matter, can shape thought. It can constrain it, can exalt it. Perhaps it cannot change thought, but it can afford a journey of change or stagnation.