Learn English – the origin of the phrase “wind your neck in!”

Apparently Q.T. is derived from quiet and originated in the 19th century, although its provenance is not certain.

From phrases.org.uk:

The slang term 'qt' is a shortened form of 'quiet'. There's no definitive source for the phrase 'on the q.t.', although it appears to be of 19th century British origin - not, as is often supposed, American. The longer phrase 'on the quiet' is also not especially old, but is first recorded somewhat before 'on the qt', in Otago: Goldfields & Resources, 1862:

Ulysses S. Grant, 18th US President is quoted many times as saying this.

I have never advocated war except as means of peace, so seek peace, but prepare for war. Because war... War never changes. War is like winter and winter is coming.

Example source

Edit: However, despite the numerous references to this on the Internet, lack of a proper source means it is probably more likely that this is a misattribution and the actual quote was created by one of the writers on Fallout and read by the narrator, Ron Perlman.

War. War never changes. The Romans waged war to gather slaves and wealth. Spain built an empire from its lust for gold and territory. Hitler shaped a battered Germany into an economic superpower. But war never changes.

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