Brian Greene on science as the ultimate adventure:

Science is about immersing ourselves in piercing uncertainty while struggling with the deepest of mysteries. It is the ultimate adventure. Against staggering odds, a species that has walked upright for only a few million years is trying to unravel puzzles that are billions of years in the making. How did the universe begin? How was life initiated? How did consciousness emerge? Einstein captured it best when he wrote, "the years of anxious searching in the dark for a truth that one feels but cannot express." That's what science is about.

It's a good attitude to have, because, in general, answers come infrequently. And when you do find an answer to an important question, there is little time to linger, since one good answer opens up more new questions than you can handle.