Innate makings, aptitude, or talent for something — the natural qualities that predispose someone to succeed.
彼女は音楽の素質があり、幼い頃からピアノが上手だ。
She has musical talent and has been good at piano since childhood.
素質だけでなく、日々の努力も成功には必要だ。
Not only talent but also daily effort is necessary for success.
教師は彼に数学の素質があることをすぐに見抜いた。
The teacher quickly recognized that he had an aptitude for mathematics.
Nature, character, or temperament — the fundamental disposition or traits of a person or thing.
彼の素質は冷静で慎重なところにある。
His temperament lies in being calm and cautious.
リーダーに向く素質を持っている人もいる。
Some people have the temperament suited to being a leader.
この仕事には細かい作業を苦にしない素質が必要だ。
This job requires a temperament that doesn't mind meticulous work.