Troubled spirits often are manipulated by other types of spirits.

It is an awful, an appalling thought, that we may be, this moment and every moment, in the presence of malignant spirits.

I am the spirit of the morning sea, I am the awakening and the glad surprise.

The conscious water saw its God and blushed. - Richard Crashaw,

Know then, unnumber'd Spirits round thee fly, The light Militia of the lower sky.

Millions of spiritual creatures walk the earth Unseen, both when we wake, and when we sleep.