Randall Munroe’s view on physics is not too wrong.

Not every system can be modeled as simple as physicists wish it to be (xkcd.com/793):
physicists

And, yes, in the hierarchy of science disciplines, physics is somewhere at the top of the tree. Agreed, “it’s nice to be on top”. But Randall has hidden another message in xkcd.com/435:

“On the other hand, physicists like to say physics is to math as sex is to masturbation.”

purity

Upscaled and sharpened version of http://xkcd.com/435/