With the first breakthrough of a universal theoretical interest, through which philosophy enters history with its universal subject matter of everything that is at all, a totality and an allencompassing unity of what is, the most general and invariant characteristics of the world, as the world of original experience, are also noticed, and correlatively the invariant properties of the experience of them itself; thus in particular the universal causal style of this world, as well as the universal structure, on the other side, of the always vague and undetermined way of knowing the experienced things.