There are a few or several types of philosophies: sensations/sense data, logic, scientism, a way of life, life-inducing behaviour of life, moral behaviour, a sub-category of morals to encourage your inner bratty behaviour, and so forth.
Epicureanism rather than being a moral philosophy is just a set of anti-rules (rules against the proper rules of decency) and anti-morals (rules that take a moral good and turn it into the complete opposite), and then it twists pleasure to make hedonism and Epicureanism nothing alike, the opposite, they do luxury so Epicurus does mysticism, they have cigarettes, coffee and a hamburger so Epicurus has olives, wine and bread, they live extraordinary or good lives so Epicurus chooses to live normal and ordinary, the opposite. It's not like ancient Greece at all, even if it's similar to Greece in the times of mysticism long before his modern era, that's just sad, he had to escape to Turkey, Turkey still does that shit.
Concerning atoms and particles and waves, Epicurus is in the same physical problem as me, e.g. as an atomist I don't want to argue with people, I simply agree that atoms wouldn't, which is a fact, cause a person to relax, because they're moving away slowly without violent collisions. Furthermore I still think a void is an emptiness and is therefore a space, an absense, and is therefore a non-existence, but what's existing within empty spaces is the distance between one block and another so it's obviously shaped in a certain way, what's existing is the floor and matter on the floor within the space, look around the platform you're standing on or where you're floating, etc, 1. something's always there, 2. what seems to exist is various arrangements and shapes of atoms, which exist, as oppose to the basic objects, and 3. as a spirit-soul dualist, the emotional feeling on your chest from the soul and the heightened feeling of the spirit and the warmth of my body is all made of atoms.