lenitudo
From LSJ
κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically
Latin > English (Lewis & Short)
lēnĭtūdo: ĭnis, f. id.,
I softness, mildness, gentleness, calmness (very rare): orationis, Pac. ap. Cic. Tusc. 5, 16, 46 (Trag. Fragm. v. 247 Rib.): mira lenitudine ac suavitate abundat, Turp. ap. Non. 132, 3 (Com. Fragm. v. 189 Rib.): nimia in aliquem lenitudo, * Cic. Verr. 2, 4, 61, § 136.