Freedom From the Known relative to Uranus correlates with the existing totality of any given's Soul reality: the entire past leading the the present life. It is a natural instinct, thus desire, within all of our Soul's. As such it is operative in all Soul's all the time. This is symbolized by Uranus.
The totality of the Soul's reality, past and present, is of course Pluto itself.
Saturn correlates to the necessary structural reality of the Soul's consciousness in any given life where the nature of that structured consciousness is necessary so as to define the evolutionary impulse of the Soul from life to life in such a way that the Soul can then define the ongoing evolutionary impulse for itself in TIME. Thus, this structural definition of the evolutionary impulse by Saturn allows the Soul to integrate it in the context of the type of 'realities' that are necessary for that impulse to manifest in the way that the Soul so intends.
The reality that the Soul thus creates relative to Saturn correlates with sequential lifetimes that all live: from life to life. And each life that the Soul creates through Saturn of course is given a subjective ego, Moon, the natural polarity of Saturn, so that the Soul can then focus itself as a subjective identity in each of these lives.
All of these lives in total, and as they are added too, correlates with the 'known' because they have been lived. Uranus is the archetype within our consciousness that desires to be 'free from the known': to liberate from it. It is this archetypal desire, impulse, that then leads to Neptune and the root desire in all our Souls, Pluto, to go Home: to return back to the Origins Of All Things.
All of this correlates to the inherent structure of consciousness in human form that we all share. Where Uranus is located by sign and house in any given chart, in any given life, correlates, among other things, to where, how, and why the 'quickening' evolutionary impulse that is rooted in the ultimate archetype of 'freedom from the known' is intended to manifest in any given life designed by the Soul itself. And this natural quickening impulse of course has it's CONTEXT, the reasons for it, in all the lives that have preceded the current life.
It is that preexisting context that thus correlates with the desire to 'be free from the known' where that known is the preexisting context itself. So, in essence, Uranus correlates with not only the ultimate impulse to be free, to go home to our Maker, but also the desire and impulse to accelerate our evolution in any given life relative to the preexisting context as defined or symbolized by the natal placement by house and sign of Uranus in any given life.
God Bless, Rad