Hegel's discussion of the dialectic of the Master and Slave is an attempt to show that asymmetric recognitive relations are metaphysically defective, that the norms they institute aren't the right kind to help us think and act with—to make it possible for us to think and act. Asymmetric recognition in this way is authority without responsibility, on the side of the Master, and responsibility without authority, on the side of the Slave.
the term Aufhebung has the apparently contradictory implications of both preserving and changing, and eventually advancement (the German verb aufheben means "to cancel", "to keep" and "to pick up").
Sublation is the motor by which the dialectic functions.
Sublation can be seen at work at the most basic level of Hegel's system of logic. The two concepts Being and Nothing are each both preserved and changed through sublation in the concept Becoming. Similarly, in the Science of Logic (Doctrine of Being) determinateness, or quality, and magnitude, or quantity, are each both preserved and sublated in the concept measure.