The bird lives up to no calling, but it uses its forces as much as is practicable; it catches beetles and sings to its heart's delight. But the forces of the flower and the bird are slight in comparison to those of a man, and a man who applies his forces will affect the world much more powerfully than flower and beast. A calling he has not, but he has forces that manifest themselves where they are because their being consists solely in their manifestation, and are as little able to abide inactive as life, which, if it "stood still" only a second, would no longer be life.