Green Mars by Kim Stanley Robinson

The white world outside the green, the opposite of Hiroko's green world outside the white. And they had opposite feelings about them. Looking from the green side, when Hiroko confronted something mysterious, she loved it and it made her happy -- it was viriditas, a holy power. Looking from the white side, when Sax confronted something mysterious, it was the Great Unexplainable, dangerous an awful. He was interested in the true, while Hiroko was interested in the real. Or perhaps it was the other way around -- those words are tricky.

p. 13

I like the contrast here of joy at a mystery and fight against what we don't know. And which is truth and which is real? Great stuff!