In Scepticism consciousness gets, in truth, to know itself as a consciousness containing contradiction within itself. From the experience of this proceeds a new attitude which brings together the two thoughts which Scepticism holds apart. The want of intelligence which Scepticism manifests regarding itself is bound to vanish, because it is in fact one consciousness which possesses these two modes within it. This new attitude consequently is one which is aware of being the double consciousness of itself as self-liberating, unalterable, self-identical, and as utterly self-confounding, self-perverting; and this new attitude is the consciousness of this contradiction within itself.
In Stoicism, self-consciousness is the bare and simple freedom of itself. In Scepticism, it realizes itself, negates the other side of determinate existence, but, in so doing, really doubles itself, and is itself now a duality. In this way the duplication, which previously was divided between two individuals, the lord and the bondsman, is concentrated into one. Thus we have here that dualizing of self-consciousness within itself, which lies essentially in the notion of mind; but the unity of the two elements is not yet present.
G. W. F. Hegel, Phenomenology of Spirit
Hegel’s take on Skepticism and Stoicism: interesting to consider how he views Skepticism as destroying the other rather than preserving its radical difference, especially considering how the “destruction” of the object is a claim leveraged against Hegelian dialectics often.