秦續堅問中翻英:「害人之心不可有，防人之心不可無。」?

One shouldn't have the heart to harm others, but must be vigilant so as not to be harmed.

We can't have the heart to damage the people ,but we can't have the heart to protect ourselves.

「害人之心不可有，防人之心不可無。」
"Don't use any bad idea to treat anybody, whereas beware of anybody causing harmful"
Yip