planetary Tao mind

Below, the Ocean - the planet's only inhabitant, organic, sentient, unimaginably powerful, profoundly indifferent to humanity. Above, the space station set from Earth, pathetically hovering over Solaris in an attempt to fathom some of the oceans mysteries, to tap a little of its knowledge. Newest arrival at the station is Kelvin, psychologist, principal character of a science fiction novel which has all the makings of a classic. This station is all but deserted, its crew reduced to a couple of half-crazed, furtive creatures, who are men of high repute among their fellow scientists. Are there but the three of them on board? Kelvin soon finds out, or thinks he does, when he is visited in the middle of the night by a lady bearing an uncanny resemblance to his long dead wife.
This is a dense and profound book, a parable and a thriller written at several levels and yielding more at each examination, yet it remains extremely readable throughout.