This chapter explores the long-term implications of converging technologies and their significance for human performance enhancement. First, based on an analysis of the human condition, I consider what types of augmentations constitute a true improvement—what is a genuine human enhancement, as opposed to inadvisable or controversial augmentation? As a criterion for differentiation, I propose a set of human qualities that should be retained in any enhancement. Although this set is incomplete, adherence to these qualities will determine whether such transformations elevate humanity to a new level or potentially destroy it, as some bio-conservatives argue. Secondly, I focus on convergent technologies and examine the possibilities they offer for human performance enhancement. I consider specific types of enhancement and reflect on t several scenarios for the human future based on converging technologies. In conclusion, I discuss the risks and sociopolitical constraints of human enhancement, along with some practical considerations about setting limits.