Historians have long debated the relationship between the Cynics and early Christianity. There are some striking similarities to be found in the lives of the Cynics who emerged in the context of Classical Greece, a few hundred years before Christ - so much so, that some believe Christ may have been influenced by them.
The likeness is superficial. The Cynics rested their thought on a different epistemological basis and their ethics were also different - and yet similar enough at times to generate a lot of discussion. For those wishing to make direct comparisons or find some trace of lineage, it's a dead end. That said, the similarities can be striking and nevertheless generate some interesting reflection. The Cynics raise issues in terms of ethics and society that the Church can benefit from. And this is not something new or something that emerged in this era of comparative religious studies.