Tao Te Ching · Ch. 65

古之善為道者,非以明民,將以愚之。民之難治,以其智多。故以智治國,國之賊;不以智治國,國之福。知此兩者亦稽式。常知稽式,是謂玄德。玄德深矣,遠矣,與物反矣,然後乃至大順。

Gǔ zhī shàn wéi dào zhě, fēi yǐ míng mín, jiāng yǐ yú zhī. Mín zhī nán zhì, yǐ qí zhì duō. Gù yǐ zhì zhì guó, guó zhī zéi; Bù yǐ zhì zhì guó, guó zhī fú. Zhī cǐ liǎng zhě yì jī shì. Cháng zhī jī shì, shì wèi xuán dé. Xuán dé shēn yǐ, yuǎn yǐ, yǔ wù fǎn yǐ, rán hòu nǎi zhì dà shùn.

In ancient times those who practiced the Tao well did not try to enlighten the people, but rather kept them simple. When people are difficult to govern, it is because they have too much cleverness. Therefore to rule a state through cleverness is to be a scourge to it; to rule without cleverness is a blessing to it. To know these two things is also a pattern worth keeping. Always knowing this pattern is called Mysterious Virtue. Mysterious Virtue is deep, it is far-reaching, it moves opposite to all things — and through this eventually arrives at great accord.

— Tao Te Ching 65

Source: Wang Bi edition (Chinese) + Hanyu Pinyin transliteration