correspondent, n.All

A Correspondent (n.) like ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠Mersenne lets a philosopher keep his solitude while staying in contact with every mind, a human journal before journals existed.