It is an old Latin expression, which means: “words fly, writings remain.” It is used when a need to express prudency on writing down one's thought because if words fly, it can be forgotten or otherwise can be mistakenly remembered by others, while what is written remains that way and cannot be neglected. A similar meaning to another Latin expression “carta canta”. It has its origins from the Roman senate Caius Titus. At that time, it had almost the opposite significance, because most people were analphabets, didn’t know how to write or read, so most messages were spreading by words (“words fly”), not written down. However, if most people had been able to read, these words would have remained an inert and unnecessary message.