wealth that cannot be stolen

na chora haryam, na cha rajaharyam, na brathru bhajyam, na cha bharakari. vyaye kruthe  vardhatha,eva nithyam, vidhya dhanam sarva dana pradhanam.   wealth exists in the  form of knowledge . this wealth cannot be stolen by a thief. cannot be divided amongst brothers, and cannot become  burdensome the more one uses this wealth(teaches it) the more it multiplies. therefore wealth in the form of knowledge, is the greatest of all riches.