natural resistance

A radical innovation may provoke a just and natural resistance.

There is a natural resistance in every healthy human being to such distressful heart-searchings.

Mr. Hershey: Isn't this only carried on until you get natural resistance?

There was opposition too; both the natural resistance of inertia and prejudice, and the active malignity of Mrs. Thaddler.

The blasts grew less violent, or became only the natural resistance of the air to their dominant rush.