A personality can be caused by a difference in

People vary in personality and social behaviour. It is generally accepted that some of this variation is due to differences in genes and some to “environment”—that is, to differences in people's experiences. This chapter is about the latter source of individual differences, the variation that is not due to genes.

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.