Tao Te Ching · Ch. 47

不出戶,知天下;不窺牖,見天道。其出彌遠,其知彌少。是以聖人不行而知,不見而明,不為而成。

Bù chū hù, zhī tiān xià; Bù kuī yǒu, jiàn tiān dào. Qí chū mí yuǎn, qí zhī mí shǎo. Shì yǐ shèng rén bù xíng ér zhī, bù jiàn ér míng, bù wéi ér chéng.

Without going out the door, one can know the world. Without peering through the window, one can see the way of heaven. The farther one travels outward, the less one truly knows. Therefore the sage knows without traveling, perceives without looking, and accomplishes without acting.

— Tao Te Ching 47

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