This text is missing some spaces, please add them: HewasgivenatopicinthetheoryofdifferentialequationsbyGeorgeBirkhoffbuthebeganreadingbooksonlogicwhichseemedtohimfarmoreinterestingthathisresearchtopic.
He was given a topic in the theory of differential equations by George Birkhoff but he began reading books on logic which seemed to him far more interesting that his research topic.