How to use "insane" in a sentence

Tina passed a leafy green plant, a four-foot-high schefflera that she had owned since it was only one-fourth as tall as it was now, and she had the insane urge to stop and risk getting caught in the coming explosion just long enough to pick up the plant and take it with her

Therefore, I will devote what space I am given here to this novel itself and to the savage, brutal, cruel, maddening, insane, inane, nonsensical, stupid, bewildering, toxic, bloodcurdling, lip-chafing, toenail-curling experience of working with a major television network to adapt this novel, and three others, as part of a program that would have been called The Dean Koontz Theater or Dean Koontz Presents or possibly Here's Dean! or even Koontzapalooza

After a few days in prison, Helene had been moved to a nearby asylum for the criminally insane

Was she really insane? I had a strange, horrible feeling that somehow Charas was right - Helene was getting away with it!

I only know one thing, and that is that you are not insane

'Helene, as soon as the police examine that fly they will know that you are not insane, and then...'

When it was burning, he said, 'I think it proves beyond all doubt that Madame Delambre was quite insane.'