Dynamic language

[so]

Hello,

Not related to D but this is a community which i can find at 
least a few objective person. I want to invest some "quality" 
time on a dynamic language but i am not sure which one. Would you 
please suggest one?

To give you an idea what i am after:
Of all one-liners i have heard only one gets me.
"The programmable programming language". Is it true? If so Lisp 
will be my first choice.

Thanks.