The concatenative and functional language F:

http://www.nsl.com/k/f/f.htm

How do you define success in terms of your work?

Chuck: An elegant solution.
One doesn’t write programs in Forth. Forth is the program. One adds words to construct a vocabulary that addresses the problem. It is obvious when the right words have been defined, for then you can interactively solve whatever aspect of the problem is relevant.
For example, I might define words that describe a circuit. I’ll want to add that circuit to a chip, display the layout, verify the design rules, run a simulation. The words that do these things form the application. If they are well chosen and provide a compact, efficient toolset, then I’ve been successful.

https://www.oreilly.com/library/view/masterminds-of-programming/9780596801670/ch04.html