Perseverance is the key to every great accomplishment because nothing of lasting value has ever been achieved without it.

Perseverance is the key to every great accomplishment because nothing of lasting value has ever been achieved without it.

坚持不懈是取得每一项伟大成就的关键，因为没有坚持不懈，就不会有任何具有持久价值的成就。

-- Unknown 佚名