Can you please check these sentences grammatically? Thank you very much
1) Kurtz was torn between his desire to bring the light of white civilization to Africa and his boundless will-to-power and inordinate pride.
2) In the end, however, Kurtz had the courage to look into himself and was horrified by the sight. Marlow perceives Kurtz's achievement of consciousness as a moral victory. That is why he keeps thinking of him as a remarkable man.
3) The accountant was the first to mention Kurtz to (?) Marlow.
4) Marlow tells us about Kurtz. BUT The book deals with (AND NOT "TALKS ABOUT") Marlow's river journey to Africa
The first three are fine.
4. Combine those two sentences... Marlow tells us about Kurtz; however, the book deals with Marlow's river journey to Africa.