Try and penetrate with our limited means the secrets of nature and you will find that, behind all the discernible concatenations, there remains something subtle, intangible and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion. To that extent I am, in point of fact, religious.

Silent Night" was declared an intangible cultural heritage by UNESCO in 2011.

Transhumance, the seasonal droving of livestock along migratory routes in the Mediterranean and in the Alps, was recognized as part of the Intangible Cultural Heritage of Humanity by UNESCO.

This is intangible.

This is a bitter day for the cultural heritage of Saxony. The thieves stole cultural treasures of immeasurable worth – that is not only the material worth but also the intangible worth to the state of Saxony, which is impossible to estimate," said Roland Wöller, Saxony's interior minister.