Rosa stared in front of her wondering how to describe water on a philosophical way. what would philosophers say about water? she knew she'd read it somewhere once... it was clear. it could catch the light, was translucent, cleaning... then she suddenly remembered it. she raised her hand 'some ancient greec philosophers believed everything consisted of water, that it really was the only element. and they were really close to the truth, if you think how much percent of a cucumber or a human is water. you could say water gives... life... nothing grows in the desert except some plants in oases and plants like cactuses, who know how to keep water in them for a very long time. on some way, it even is light, by reflecting it, and colour, like the rainbow.' she dropped her hand hoping she was right.