The reason is very simple: if one attempts to climb a mountain, however high he reaches, he has failed if he does not reach the top.

道理很简单：如果一个人爬山，无论他爬得多高，只要没有到达山顶，他终归是一个失败者。

youdao

And when you have reached the mountain top, then you shall begin to climb. — Kahlil gibran.

当你到达山顶的时候你才开始攀登。—卡希尔·吉布安。

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Their mission was to climb "Tiger Hill" (actually a big-ass mountain), and neutralize the three enemy bunkers at the top.

他们当时的任务是爬上“饿虎岭（Tiger Hill）”（实际上是座超级高的大山），压制山顶上的敌军地堡火力。

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Since nineteen fifty-three, more than ten thousand people have attempted to climb to the top of the world's highest mountain.

VOA: special.2010.06.30

It is hard enough to climb to the top of the mountain.

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Seasoned climbers can take on the challenge to climb Camelback Mountain and enjoy the view from the top.

FORBES: Sanctuary In The Desert: Camelback Inn

The rack railway that winds its way up makes its final climb inside the mountain, leaving passengers to emerge blinking onto the snowfield at the top, where the igloo village takes shape every winter.

BBC: Five European winter boltholes