Beans for brains

A beautiful concentration of rhetorical figures is to be found in the The Observer today. Concerning itself with how to boost the brains performance (among one of the tips are that infamous breakfast of British students: baked beans on toast) the text quotes science writer Lyell Watson for saying:

'If the brain were so simple we could understand it, we would be so simple we couldn't.'"

A chiastic parallellism that is also a paradox.