Caregiver. Break that noun into its component parts, and we find two of the most tender and beautiful words in the English language. “Take care,” we say when wishing a friend well at the end of a conversation. And nearly every religion in the world stresses the importance of giving our time, talent, and treasure to others. While we most often associate caregiving with assistance to the aged or the infirm, nearly all adults act as caregivers in one capacity or another. Parents spend decades raising children. Husbands and wives tend to their partners when they’re sick or in distress. For example, one public school librarian I know spent years nursing her husband back to health after he fell chronically ill from Lyme disease. Others watch over grandparents or elderly fathers and mothers, often taking them into their homes and tending to their needs. Some people even become professional caregivers, …