"Ressentiment" as a concept gained popularity with Friedrich Nietzsche's writings. Pathological Ressentiment entails "Value-Delusion". His thesis was entitled, "Toward a Phenomenology of Ressentiment". It is closely related to the concepts of self-deception and "ressentiment". Aeshbach S., "Ressentiment&colon; an anatomy". This inversion of values develops out of the "ressentiment" of the powerful by the weak. In this way one can express both ressentiment and the will to power. In that way ressentiment finds an outlet even in an enthusiastic age. "Ressentiment" comes from reactiveness&colon; the weaker someone is, the less their capability to suppress reaction. Atonement could be achieved only by moving beyond rivalry and ressentiment. When [negative psychic feelings and feeling states] can be acted out, no ressentiment results.