To furnish the means of acquiring knowledge is… the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of existence.

Adams frames education not merely as the transfer of facts but as the provision of “means” by which people can continue learning for themselves. In that sense, the gift is empowering and durable: it equips individuals to expand their capacities, opportunities, and civic agency over time. The claim that it “prolongs life” is best read metaphorically—knowledge extends one’s effective lifespan by widening memory, foresight, and participation in human experience beyond immediate circumstance. “Enlarges the sphere of existence” suggests that learning multiplies the worlds a person can inhabit—intellectually, morally, and socially—making education a foundational public good.