Lorick #55:

I'm an agist; my enemy's old.

My lost friends all inhabit a hole

I've a shadowy side

and a childish pride;

I've a world, with no mother nor scold!

But first, we solve #56 - here it is one last time:

I'm direct when it comes to current...

And my lab is prolific - that's patent!

In business I'm cruel

The alternates - fools!

I'm inspired, I perspire, I invent!