Know thyself. A maxim as pernicious as it is ugly. Whoever studies himself arrest his own development. A caterpillar who seeks to know himself would never become a butterfly.
To be a character who feels a deep emotion, one must go into the memory's vault and mix in a sad memory from one's own life.
Sweet is the memory of distant friends! Like the mellow rays of the departing sun, it falls tenderly, yet sadly, on the heart.