Can not Say in front of people behind him to reason things out, he would understand.

在人前不能说，背后给他讲道理，他会明白的。

youdao

The method to be used in debates is to present the facts, reason things out, and persuade through reasoning.

辩论的时候，必须采取摆事实，讲道理，以理服人的方法。

《新英汉大辞典》

All these things may deliver happiness in varying amounts, but these areas of pursuit are inherently flawed for one simple reason: they are external to you and therefore largely out of your control.

这些东西可以为你带来不同程度的幸福感，但是它们都有缺陷，原因是：对于你，它们是外在的，并不受你控制。

youdao

The reason I'm pointing this out is if we're going to do big things on energy, or health care, or infrastructure, then we're going to have some differences.

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