Note 184 — Chapter XI

"The concept of energy is that which comes nearest to the concept of libido. Libido can perhaps be described as "effect," or "capacity for effect." It is capable of transformation from one form to another. The metamorphosis can be sudden, as when one function replaces another in a moment of danger; or it can be gradual, as we see it in the process of sublimation, where the libido is led over a long and difficult path through a variety of forms into a different function."—Mary Moltzer.