Which programming language to learn?

Update: in my student life I learned to program in Basic, Fortran, Pascal, Turbo Pascal and already graduated from university I learned to program by my own Visual Basic, now I see job ads and they ask for Python, Java, C++, PHP, Javascript, etc. add to it other progrmas like autocad, solidworks, access, Do I have to learn... show more in my student life I learned to program in Basic, Fortran, Pascal, Turbo Pascal and already graduated from university I learned to program by my own Visual Basic, now I see job ads and they ask for Python, Java, C++, PHP, Javascript, etc. add to it other progrmas like autocad, solidworks, access, Do I have to learn all of them ? my brain is going to explote
Update 2: Thanks a lot all of you, we have a winner ... Javascript
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