Lecture IV

Now, when instinct—which one can understand more concretely in external form—is viewed as impulse, it is very interesting to observe how it becomes more inward, and also more of a unity. When speaking of instinct, either in animals or in its weaker form in man, we shall always regard it as something stamped upon the being from without: whereas impulse, more inward in its nature, also comes more from within, because the super-sensible etheric body transforms instinct into impulse.