When we closed in on him he fought like a tiger.

He is immensely strong, for he was more like a wild beast than a man.
I never saw a lunatic in such a paroxysm of rage before, and I hope I shall not again.

It is a mercy that we have found out his strength and his danger in good time.

With strength and determination like his, he might have done wild work before he was caged.
He is safe now, at any rate.

Jack Sheppard himself couldn't get free from the strait waistcoat that keeps him restrained, and he's chained to the wall in the padded room.
His cries are at times awful, but the silences that follow are more deadly still, for he means murder in every turn and movement.
Just now he spoke coherent words for the first time.