Robot cognition requires machines that both think and feel. Vision is never neutral, it is always laden with affective meaning. Western thinkers have separated emotion from cognition – emotion being the poorer sibling of the two. Cognition helps to explain the nature of space-time and sends humans to the Moon. Emotion is not an ‘add-on’ module that endows a robot with feelings or allows it to express an internal state, such as the current risk of overheating. Its integration is a design principle of the information-processing architecture. Without emotion, no being that we might create can have any hope of aspiring to true intelligence.