Greek and Roman authors thought that hieroglyphs were symbols of ancient Egyptian wisdom. They dismissed any phonetic component in the hieroglyphs.

This misguided view of hieroglyphs as 'picture writing' obscured any attempt at deciphering it. Near the 18th Century, Danish scholar Georg Zoëga thought that some hieroglyphs might be phonetic signs.

• In 1798, Napoleon Bonaparte invaded Egypt. Military engineers discovered the Rosetta Stone in July 1799 while rebuilding an old fort in the Nile Delta.
• It was clear that the bottom inscription on the Rosetta Stone was written in the Greek alphabet and the top part in Egyptian hieroglyphs.
• In the middle was a script about which little was known. Today we know this scripts as a cursive form of ancient Egyptian writing.

• In 1802, a French and a Swedish scholar used similar techniques to unravel the text. They searched for the name Ptolemy, by isolating repeated groups of symbols in about the same position as the Greek inscription.
• They drew up a tentative alphabet and applied it to the rest of the inscription. Other words such as 'Greek', 'Egypt', and 'temple' could be identified. But the demotic text (a cursive form of hieroglyphs) was not an alphabet, nor completely unrelated to hieroglyphic.
• In 1815, an English scientist and polymath, Thomas Young, traced how the pictographic hieroglyphs, showing people, animals, plants and other objects, had developed into their abstract, cursive equivalents in demotic. Young concluded that demotic consisted of a mixture between hieroglyphics and letters of the alphabet.

In 1822, Jean-François Champollion found an essential clue from the newly discovered cartouche (oval rings enclosing certain groups of hieroglyphs, generally names and titles) containing the name of Cleopatra. The alphabet was now mostly correct and allowed him to translate the names of dozens of rulers.

When Tutankhamun's cartouche was discovered in 1922 and deciphered, it turned out that the "chick" pictogram was phonetic for the vowel 'u', the 'shepherd's crook' was a symbol meaning 'ruler. This was the turn of uncovering the secrets of a great civilisation.