Money can reach a limit. It is always measurable. But, one can never measure the amount of knowledge one possesses. One cannot buy a solution to save oneself in utter emergency situations. One has to have a knowledge to deal with it. Money cannot get you grades in universities or schools. Only smart brains or enlightened brains can claim them. Money lets you buy things, but to buy the right things one needs the proper knowledge about the object being bought. Money can be lost, stolen or misplaced; whereas, knowledge cannot be.