I read something of his that was published after his death: "Letters To Milena"
I could tell he had a different style, not easy to relate to him or even understand the way he thinks, but he had a very interesting character.
I saved some lines that I thought most interesting:

It is a blow because it will take time and I need all the time I have and a thousand times more than all the time I have and most of all I'd like to have all the time there is just for you, for thinking about you, for breathing in you.