Exactly. Ideas cannot be copyrighted; verbatim language is, by statute, copyrighted. Occasionally a brief quote might be necessary and considered fair use. For, example, you might in discussing Einstein's work need to use the sentence, "E equals mc squared." However, even if you don't copy a source, credit it. To not credit the source would be plagiarism.
Fred
On Oct 26, 2005, at 5:41 AM, Uwe Brauer wrote:
could I avoid that problem in simply not copying even a single sentence verbatim?