Well, quite a lot, actually:
In fact, I’ve just published a study that shows that almost all Nobel laureates in the sciences are actively engaged in arts as adults. They are twenty-five times as likely as average scientist to sing, dance, or act; seventeen times as likely to be an artist; twelve times more likely to write poetry and literature; eight times more likely to do woodworking or some other craft; four times as likely to be a musician; and twice as likely to be a photographer. Many connect their art with their scientific creativity.
Go read the whole thing. And the next time you doubt the utility of creativity, or someone tells you to stop dreaming, read it again.
Without creativity, we’d still be scratching out a meager living as naked apes alone in the wild. Remember that. And dream.