You have given me great pleasure with your letter, so full of information, dearest friend. I take joy in your good prospects, praise your industriousness, and worry about your preserving your health; but I hope that those worries will be removed by your soon receiving a well paying position or an appointment as chaplain which will not require you to expend your energies so much.

I did not overlook that spot in the “Letters of a Minister” and I noticed at whom it was directed. But it didn't trouble me.

I noticed a certain animosity in Herr Reinhold's letter as well; he is vexed that I have not read his Theory [of the Power of Representation]. I answered him and I hope he will be reconciled to my postponing a complete reading of his book because of my pressing projects. The proof that you give of his proposition concerning the material of representation is comprehensible and correct. If, when I refer to the “material” of a representation, I mean that whereby the object is given, then, if I leave out synthetic unity (combination), which can never be given but only thought, what remains must be the manifold of intuition (for intuition in space and time contains nothing simple).

Your proof of the ideality of space as the form of outer sense is entirely correct; only the beginning is questionable.