一把刀的锋刃是很难越过的，所以智者说得救之道是很难实现的。”英语原文是什么？

这句话的英语原文是什么？
有谁知道的嘛？或是试着翻译一下也可以。 这是毛姆的《刀锋》里的话。

锋刃of a knife is very difficult to cross, so the wise say the path of salvation is very difficult to achieve. "
或者The knife blade is difficult, so the wise men said the across of salvation is difficult

The knife blade is difficult, so the wise men said the across of salvation is difficult. 3Q

你好！ The blade of knife is hard to surmount, so is to attain salvation, as the wise put it. 如果对你有帮助，望采纳。

锋刃of a knife is very difficult to cross, so the wise say the path of salvation is very difficult to achieve.

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