The most simple lesson science teaches is that there is always more to learn. The progress that scientists make toward that goal is evident everywhere. We are surrounded by a world of explosive innovation. We expect the world to change from day to day, and change it surely does. Just try to buy the latest version of a computer and you will see what I mean.
Scientists are largely responsible for the huge quantity and rapid pace of social change.
Paradoxically, the universe is simultaneously a fairly large and also an extremely small place. While the expanding universe may stretch eons into the extraordinary depths of outer space, our experience of infinity is hemmed in by the lamentable circumference of our craniums. Yet, slight as our experience of the universe may be, nonetheless, our contemplation of the cosmos strives improbably to its farthest frontiers. What we cannot grasp directly through experience, we conjure into comprehension with theory. By dislodging the assumption of humanity's universal importance, science advanced to a higher understanding of the cosmos by privileging the observable, rather than the presumable, properties of natural phenomena.