The ideas
Three ideas, explained properly
Each of these gets a whole book. Each also gets a full explanation here, free — what the idea is, what it is not, what the Stoics actually said about it, and the place it reaches its limit. No sign-up, no gate.
The dichotomy of control
what is in your control · ta eph' hēmin (τὰ ἐφ' ἡμῖν) · “focus on what you can control”
The dichotomy of control is the Stoic distinction between what is up to us and what is not. Epictetus placed it first in the Enchiridion: our judgments, desires, and actions are in our power; our bodies, reputations, property, and outcomes are not. Wisdom is spending yourself only on the first.
Amor fati
love of fate · loving your fate · amor fati meaning
Amor fati is Latin for “love of fate”: the Stoic practice of meeting what happens not with resignation but with acceptance, and finally with something like welcome. Marcus Aurelius put it plainly — love that only which happens to you. It asks you to stop wishing the given were otherwise.
Memento mori
remember you must die · memento mori meaning · remember death
Memento mori is Latin for “remember you will die”: the Stoic practice of keeping your own death in view so that you actually live the time you have. It is not morbid. It shrinks the trivial back to its real size and ends the postponement of the life you mean to start.