。
Eventually, all living things will die out.
Literal
Before-long all-things [topic-は] die-out.
A somber philosophical statement. 万物 (ばんぶつ) 'all things, everything in the universe' is a formal/literary compound. 死に絶える (しにたえる) is a compound verb 'to die out, become extinct' — 死ぬ (die) + 絶える (cease, disappear). やがて here is in hiragana, the standard modern form. The plain polite form ~ます keeps the register at polite-written.