Lambda the Ultimate

APL at 12, PL/I at 13, BASIC at 14, Pascal at 17, 370 Assembler at 18, SNOBOL at 18, FORTRAN at 18, C at 21, awk at 24, ML at 26, Modula-3 at 28, Icon at 31, first published language (SLED) at 32, Lua at 34, Haskell at 39, all downhill from there...

Design, theory, and implementation of computer programming languages.
Software: the part of the system you can't hit with a hammer.