⓪ The proof of the infinity of attributes
For Spinoza, God or Nature, Substance, has infinite attributes of which we have access only to two: thought and extension.
If perceptions are outside, they are attributes of substance.
Bergson solves Spinoza's problem. To put it like this, Bergson solves Spinoza's problem, is completely false: that we have access to only two of the infinite attributes was never a problem for Spinoza; and Bergson never proposed perception as its solution. For Bergson, perception is outside is a marker, a milestone marking his progress along the road he takes, set by the problem of duration, of time. For me, it's at the start, yet comes in the middle and opens an immanent field of practices, in which thought is only one.
If perceptions are outside, they are both attributes, of substance or immanence, and infinite. . .
See the following for more.