Knuth on reusable code

Today via Lobsters: APL Style: Patterns/Anti-patterns:

I also must confess to a strong bias against the fashion for
reusable code. To me, “re-editable code” is much, much better
than an untouchable black box or toolkit. I could go on and on
about this. If you’re totally convinced that reusable code is
wonderful, I probably won’t be able to sway you anyway, but
you’ll never convince me that reusable code isn’t mostly a

— Donald Knuth, Interview with Andrew Binstock