Seneca said this quote

But is life really worth so much? Let us examine this; it's a different inquiry. We will offer no solace for so desolate a prison house; we will encourage no one to endure the overlordship of butchers. We shall rather show that in every kind of slavery, the road of freedom lies open. I will say to the man to whom it befell to have a king shoot arrows at his dear ones [Prexaspes], and to him whose master makes fathers banquet on their sons' guts [Harpagus]: 'What are you groaning for, fool?... Everywhere you look you find an end to your sufferings. You see that steep drop-off? It leads down to freedom. You see that ocean, that river, that well? Freedom lies at its bottom. You see that short, shriveled, bare tree? Freedom hangs from it.... You ask, what is the path to freedom? Any vein in your body.