4 sentences for 小人 (xiǎo​rén — villain)

1. 君子坦荡荡，小人长戚戚。

   jūn​zǐ tǎn​dàng​dàng, xiǎo​rén cháng​qī​qī.

   A gentleman is open and poised, while a mean person is always full of anxiety.

   Source: Dong Chinese Dictionary

2. 以小人之心，度君子之腹。

   yǐ xiǎo​rén zhī xīn, duó jūn​zǐ zhī fù.

   To judge the heart of a gentleman by the standards of a mean-spirited person.

   Source: Dong Chinese Dictionary

3. 亲贤臣，远小人。

   qīn xián​chén, yuàn xiǎo​rén.

   Keep close to virtuous officials and stay away from corrupt ones.

   Source: Dong Chinese Dictionary

4. 他在背后放冷箭，真是个卑鄙的小人。

   tā zài bèi​hòu fàng lěng​jiàn, zhēn shì gè bēi​bǐ de xiǎo​rén.

   He stabs people in the back; he is truly a despicable villain.

   Source: Dong Chinese Dictionary