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> But just as you can do object-oriented programming in C (a language really not designed for it), you can do functional programming in a lot of languages not really designed for it too.

This statement is only true depending on what you mean by OOP. For instance see this post[0] implementing minimal OOP with scheme.

0: http://robots.thoughtbot.com/you-could-invent-objectoriented...

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This is also true. OOP in Java is certainly not the same as OOP using CLOS, and not the same as Perl and Moose.

But there is a common thread through these. Namely with OOP, you are tying structure and behavior together so that behavior can encapsulate structure. OOP, like FP, isn't so much "a paradigm" as a "family of paradigms," one or more per language.

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