Question: The Lubavitcher Rebbe, in one of his letters (letter no. 184, dated from 7 Shvat, 5705), cites the Rebbe Rayatz (The Tzemach Tzedek) and says:

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> A word spoken is public knowledge; in writing, it is for the entire world, and in print, it is for generations after generations.’”
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The Rebbe quotes the Tzemach Tzedek from Igros Kodesh (אגרות קודש) of the Rebbe Rayatz, Vol. II, Letter No. 558

Does anyone know where to find this? I could not find it unfortunately

Answer: 
The source can be find on Hebrewbooks [here](https://hebrewbooks.org/pdfpager.aspx?req=31602&st=&pgnum=448&hilite=) (3rd paragraph)

[![enter image description here](https://i.stack.imgur.com/Ikupb.jpg)](https://i.stack.imgur.com/Ikupb.jpg)

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> So I received from our master our teacher, the holy Rabbi, the Tzemach Tzedek, his righteous and holy memory should be as a blessing for life in the next world. He once said that a Jew when he speaks, needs to know the next word in his speech as it is public. And a word that is written is before the world. And word in print is for generations. And he concluded his words - if our Sages were saying about our Rabbis of blessed memory, "be cautious about your words", then how much more so the average person.
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[![Igrot Kodesh_Rayatz_Vol2](https://i.stack.imgur.com/2IjJU.jpg)](https://i.stack.imgur.com/2IjJU.jpg)

[![second page
](https://i.stack.imgur.com/lDNRg.jpg)](https://i.stack.imgur.com/lDNRg.jpg)
This is the actual letter published from volume 2 that is quoted.