Readable Functional Languages

[Carel Fellinger]

Admittedly off topic, I would like some advice on what language to choose
to explore the realm of functional languages given that I can't cope with
'impure' languages like C, C++ and Perl and that I love Python mostly for
its readability and its adherence to the principle of least surprise that
lures me into thinking that it has no dark corners.
-- 
groetjes, carel