learning breadth vs depth

This is the list of languages that I learned and used at university, when studying Computer Science

1. C
2. C++
3. Java
4. Python
5. Perl
6. Common Lisp
7. Prolog
8. Shell scripting
9. motorola 68k assembler
10. MIPS assembler

This is the list of languages that I learned and/or used at work, when developing corporate software

1. Java
2. Perl
3. C++
4. C
5. Ruby
6. BPEL ? (this doesn't really count)

The above lists are ordered by frequency of use.
Now it may look like I learned a hell of a lot more languages at uni than I have at work; But really we only had time to learn the surface of those languages and just enough to get the subject projects completed.
At work we may only use a small number of languages, but I've had to study them in greater depth. In addition, I've had to learn a lot of different frameworks and tools (especially in Java) to learn.

It's a matter of :

• breadth vs depth
• core-language vs tools and frameworks.