Placid Pleasant Tranquil
Zeno divided Philosophy into logic, physics and ethics. He spoke of the "ether" (universe) as divine fire (energy) and of souls as belonging the the "world-soul" of the Universe. He recognized the unity of "good" and "logos" (universal reason) and defined "Pathos" as what is repugnant to logic and ethics.
Zeno proposed four cardinal negative emotions - Epithumia (desire), Hedone (pleasure as in hedonism), Phobos (fear as in phobia) and Lupe (fear and pain)(Note that lupanar in Sp is a house of prostitution, a site where desire, fear, pleasure and pain frequently mix)
Modern scientists honored Zeno by naming a crater on the Moon after him.
As one of the progenitors of Stoic Philosophy, Zeno stressed that goodness and peace of mind arises from living a life of virtue in accordance with nature. He noted that tranquility can best be reached through indifference to pleasure and pain. Being old he felt it was time to die and decided to strangle himself.