With deep I mostly meant there is a richness in material to the philosophy from the original ancients that has survived. And then a richness in material that has been written about it since. Including criticism.

> Metaphysical bullshit

Its a wild ride that part. Its also interesting to read how people try to reconcile that part as Christians, atheists, bhuddists and so on.

The creator of modern cognitive behavioural therapy, Aaron Temkin Beck, directly attributes the therapy to the Stoic disciplines of passion, action and assent. And CBT is objectively helping tens of thousands every day. CBT in essence proves that there are parts of Stoicism that hold true even if their metaphysical ideas didn’t stand the test of science.