Code-switching — alternating between two languages mid-sentence — is a sophisticated linguistic skill, not a deficiency.

The average educated English speaker knows 40,000–50,000 words but uses only 5,000–10,000 daily.

Wittgenstein argued that the limits of language are the limits of one's world.

Ancient Egyptians distinguished between the spoken language and written hieroglyphics — they used a separate everyday script.

The human voice is the only musical instrument capable of producing language simultaneously with music.

The Sumerian language, one of the earliest written, died as a spoken language around 2000 BC but continued as a liturgical language for centuries.

The Hawaiian language has only 13 letters — 5 vowels and 8 consonants.

The word 'nice' originally meant foolish or stupid in 13th-century English — its meaning has almost fully reversed.

The Pirahã language of the Amazon has no words for numbers beyond 'one,' 'two,' and 'many.'