(both) young and old (alike)
老いの悲しみ
〈多少敬意もこめて〉 《with》 (the) persistence [tenacity, tenaciousness, perseverance] of an old man [woman]; (the) singleness of purpose typical of the old age
〈けなして〉 (the) stubbornness [wilfulness, unmanageability] of an old man [woman].