Shaker Philosophy aplicado al Software Development

If it is not useful or necessary, free yourself from imagining that you need to make it.
If it is useful and necessary, free yourself from imagining that you need to enhance it by adding what is not an integral part of its usefulness or necessity.
And finally: If it is both useful and necessary and you can recognize and eliminate what is not essential, then go ahead and make it as beautifully as you can.

ó mas consiso:

Don’t make something unless it is both made necessary and useful; but if it is both necessary and useful, don’t hesitate to make it beautiful