To sort of change the wording of what others have said, don't think of learning new languages. Learn to solve new problems. Sometimes the problem is best described in a language you don't already know. In that case learn it.
In my case, I've solved many interesting problems over the last decade using C and C++ and an odd shell script here and there. It just so happens those are good languages for solving the problems that I need to solve(which happen to occupy the world in between embedded programming and desktop programming).
Comments
To sort of change the wording of what others have said, don't think of learning new languages. Learn to solve new problems. Sometimes the problem is best described in a language you don't already know. In that case learn it.
In my case, I've solved many interesting problems over the last decade using C and C++ and an odd shell script here and there. It just so happens those are good languages for solving the problems that I need to solve(which happen to occupy the world in between embedded programming and desktop programming).