I'm saying it's also the Scheme manifesto.

It might be also the Scheme manifesto, but in Python its so deep rooted in the community that its practically embedded in the language itself:

Python 2.6.5 (r265:79063, Oct 28 2010, 20:56:23)

[GCC 4.5.0 20100604 [gcc-4_5-branch revision 160292]] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import this

The Zen of Python, by Tim Peters

Beautiful is better than ugly.

Explicit is better than implicit.

Simple is better than complex.

...

Nobody is saying that this advice is unique to Python. Feel free to use it for Visual Basic too if you want.