I will do my best to keep it concise.
You wrote over 3000 words commenting on my original 1000-word article.
The Stoic intends to mould his mind into a fortress of solitude, not a 'safe-space.'
A fortress is literally a stronghold, which is a fortified place of security. That sounds pretty safe to me.
They seek to…be able to endure long suffering
Except, for…