The wizards already appeared old when they entered Middle-earth. They were "clothed" in the bodies of old Men, as the Valar wished them to guide the inhabitants of Middle-earth by persuasion and encouragement, not by force or fear. However, they aged very slowly and were in fact immortal. Physically they were "real" Men, and felt all the urges, pleasures and fears of flesh and blood. Therefore, in spite of their specific and unambiguous goal, the Wizards were capable of human feelings; Gandalf, for example, felt great affection for the Hobbits. They could also feel negative human emotions such as greed, jealousy, and lust for power.