The only failure is not to try.

失败只有一种，那就是不去尝试。

youdao

The only failure is not knowing how to be happy.

一个人要是不懂得快乐之道，才是真正的失败。

youdao

The only failure is to grow old and not to have a tried!

惟一的失败就是：我们长大变老，却不曾尝试过！

youdao

The only failure is to grow old and not to have a tried!

惟一的失败就是：我们长大变老，却不曾尝试过！

youdao