To live each day as though one's last, never flustered, never apathetic, never attitudinizing - here is the perfection of character.
c. AD 170-180 Meditations, bk.7, no.69 (translated by M Staniforth).

To live each day as though one's last, never flustered, never apathetic, never attitudinizing - here is the perfection of character.