Carbon Based Lifeforms, an ambient music duo, sometimes embed text passages in their music, taken from various sources. This website claims that a French text passage in the song "Neurotransmitter" is taken "From Star Trek, the Next Generation". The passage translates to:
It's not a hallucination. It is not a dream. There is a real phenomenon, physical and measurable, lurking on board. Maybe you could help me identify it?
I wonder whether it really is taken from an TNG episode and if so, from which.