My favorite language for maintainability is Python. It has simple, clean syntax, object encapsulation, good library support, and optional named parameters.
With the increasing importance of standards for system-level objects such as COM and CORBA, it is particularly important that the C++ bindings to those be clean, well documented, and simple to use.
Everything has to be clean and orderly when I sit down to write. I have candles going, and small objects that remind me of what I am working on, or bring me into the world of the character.
The yogi should meditate on a firm seat, one that is clean - untainted by dirt or unspiritual vibrations of others. The thought or life force emanating from an individual saturates the objects he uses and his dwelling.
Clean up your own mess.
Objects are what matter. Only they carry the evidence that throughout the centuries something really happened among human beings.