Can I make a sentence that only I can read or write?

I have a source for sentences, but I cannot publish them, but I can use them for my own use.

Shouldn't you be able to create a list and not publish ?

No, you cannot. All sentences are public. You can put them into a list and decide not to publish the list, so the list is only visible to you, however, each sentence itself is visible to everybody.

malaili, I see it the same. It would also avoid another problem: copyright. So, I could write my own useful sentences from a textbook and be also sure that they are correct. Unfortunately, it's not possible. I suggested this already some time ago, but they didn't answer.

Oh please, you can't copyright sentences

I don't believe you can copyright a sentence unless it contains a trademark.

http://www.copyright.gov/circs/circ01.pdf
http://www.copyright.gov/help/faq/faq-protect.html

"Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed." "Copyright does not protect names, titles, slogans, or short phrases. In some cases, these things may be protected as trademarks."

*edit* I'm certainly no lawyer, so I can't be positive of this.

Jeremy, copyrights would protect verbatim copying, and probably even if you change only minor parts (like names or whatever).

Especially if it is taken from a list of example sentences... if you pluck one out of a book or newspaper article, it is probably a minimal copying that would not really be protected.
But copyright law varies by country, and I'm not a lawyer in any country at all.