UDP has mentioned this before within the context of LIIs being on a kind of "quest" for truth, but I think it applies to all Alpha types.
I think a big part of Alpha quadra is the idea of life as a kind of adventure or journey. With repressed Ni and Te, Alpha types are hesitant to take and apply life advice from other people because they prefer to experience life for themselves, letting it "unfold" in front of them as opposed to looking forward and anticipating things. Instead, with Ne and Ti, they prefer to assimilate new experiences and build a "system," or idea of how life works, for themselves.
With repressed Se and Fi, they refuse to see others as "authorities" in terms of knowing what's best for them, even when it comes to close friends or family. Instead, with Si and Fe, they want to experience life as an emotional journey, tackling obstacles as they come and enjoying life on the way instead of always trying to prepare for what's next.
Also, as the "child" Quadra, Alpha types have to start from the beginning and go through all the paces; no skipping steps along the way.
But beyond all of that, it's a feeling, a feeling of being on a journey, going somewhere without knowing where, just living in the world, footloose and fancy-free.
Do other Alpha types identify with this at all?