I have a question about the usage of for here. Can I replace it with by without changing the meaning? The full sentence is as follows:
Yet we must here leave aside the explanation of the nature of free thought existing for itself, and remark rather that for the attainment of the union in and for itself of faith and thought a long period of time has been necessary [...]
The context is Hegel's thoughts on free thought and its interaction with faith and thought again, which is weird.