The official ISFE emblem consists of the Greek-alphabet capital letter PHI in blue with the words Society of Epicurus written above it, against a white background. The letter PHI was chosen to represent not just philosophy but also phylia, which usually gets translated as friendship, and of which Norman Dewitt said it’s the fuel on which Epicureanism runs.
The emblem represents our bonds of friendship: the central pillar is Epicurus and our shared affinity and affiliation with him is the circle that orbits around it.
The official motto of the Society is Sic Fac Omnia Tamquam Spectet Epicurus (which translates as Do all things as if Epicurus was Watching), a proverb given to us by the Iberian Stoic philosopher Seneca.
(A special thanks to Mark for his work on the emblem!!)