On the threshold of Harvard Yard and Massachusetts Avenue stands Dexter Gate, donated to the college in 1890. It cuts through Wigglesworth Hall, and anybody who lives in a river house walks through it at least once a day. But for all of its traffic, few students notice the carved inscriptions in the stone arch above the gate. The outside of the gate reads, “Enter to grow in wisdom,” while the inside bears the message, “Depart to serve better thy country and thy kind.”