Human consciousness is considered in the perspective of early development. Infants and young children remind us that at its core, the problem of consciousness is primarily a problem of identity, in particular a problem of self-identity with others in mind. It is about how we feel and construe ourselves as an entity among other entities. It is about becoming co-conscious: Aware of oneself through the evaluative eyes of others. This development unfolds in the first 18 months of life, following major steps that are described, and arguably considered as a human trademark.