Jean Berko Gleason is a living legend in the field of psycholinguistics — how language emerges, and what it tells us about how we think and who we are. She has helped to illustrate the remarkable ordinary human capacity to begin to speak, and she’s continued to break new ground in exploring what this may teach us about adults as about the children we’re raising. We keep learning about the human gift, as she puts it, to be conscious of ourselves and to comment on that. For her, the exploration of language is a frontier every bit as important and thrilling as exploring outer space or the deep sea.