Man's quest for knowledge is an expanding series whose limit is infinity, but philosophy seeks to attain that limit at one blow, by a short circuit providing the certainty of complete and inalterable truth. Science meanwhile advances at its gradual pace, often slowing to a crawl, and for periods it even walks in place, but eventually it reaches the various ultimate trenches dug by philosophical thought, and, quite heedless of the fact that it is not supposed to be able to cross those final barriers to the intellect, goes right on.

I have to admit that he was not bad at combinatorial analysis - a branch, however, that even then I considered to be dried up.

A man who for an entire week does nothing but hit himself over the head has little reason to be proud.

For moral reasons I am an atheist - for moral reasons. I am of the opinion that you would recognize a creator by his creation, and the world appears to me to be put together in such a painful way that I prefer to believe that it was not created by anyone than to think that somebody created this intentionally.

How do you expect to communicate with the ocean, when you can’t even understand one another?

The night stared me in the face, amorphous, blind, infinite, without frontiers. Not a single start relieved the darkness behind the glass.

Giese was an unemotional man, but then in the study of Solaris emotion is a hindrance to the explorer. Imagination and premature theorizing are positive disadvantages in approaching a planet where-as has become clear-anything is possible... The fact is that in spite of his cautious nature the scrupulous Giese more than once jumped to premature conclusions. Even when on their guard, human beings inevitably theorize.