He doesn't have to deal with anyone but me and the occasional lower life-form.

"Having sympathy for lower life-forms is a good habit to learn."

At least that is a transformation, albeit to a lower life-form.

Logical thought is lacking in many lower life-forms, but not all.

"This passion for your plants seems to attract other lower life-forms as well."

Others show minimal signs of lower life-forms, both plant and animal.

Only here could men be driven from their place by lower life-forms.

She glanced at them as if they were a lower life-form.

She means politics being the low life-form that it is.

The rest seemed to be lower life-forms of some kind.