Experience and quantity

Welfare and gratification are  not reliable measures of satisfaction. The material condition does not necessarily map well into subjective experience. 

To be joyous in one's portion would be a better measure of one's wealth than is an accounting of one's possessions. 

Experience does not quantify easily; nor does what is easily quantified yield well to the satisfactions that, in oreder for them to be appreciated, must be experienced. 

Experience and quantity are the two metric poles in the science of human happiness.