“Let's just start and see what happens.”

Vorkosigan Saga, A Civil Campaign (1999)

On her painting style in “Lucy Liu on making art to find a sense of belonging” https://www.cnn.com/style/article/lucy-liu-artsy/index.html in CNN (2019 Nov 28)

Source: How I Live Now

Peter Marshall, US Senate prayer (10 March 1948)
Misattributed

Variant: Hallo, Rabbit,” he said, “is that you?”
"Let’s pretend it isn’t,” said Rabbit, “and see what happens.
Source: Winnie-the-Pooh (1926)

Pop Chronicles, Show 7 - The All American Boy: Enter Elvis and the rock-a-billies. Part 1 http://digital.library.unt.edu/ark:/67531/metadc19754/m1/; C. Robert Jennings, " Elvis Lives! http://pqasb.pqarchiver.com/latimes/doc/155809300.html?FMT=ABS&FMTS=ABS:AI&type=historic&date=Feb+18%2C+1968&author=Jennings%2C+C+Robert&pub=Los+Angeles+Times+%281923-Current+File%29&edition=&startpage=M28&desc=ELVIS+LIVES%21", 1968-Feb-18, L.A. Times Magazine, p. M28.
Context: It just happened. I like to sing, and well, I just started singing and folks just started listening. I can't tell folks that I worked and learned and studied, and overcame disappointments, because I didn't.

Oh, the Places You'll Go! (1990)
Context: Out there things can happen, and frequently do,
To people as brainy and footsy as you.
And when things start to happen, don't worry, don't stew.
Just go right along, you'll start happening too!

As Don Ramón
Original: (sp) ¡Qué pasó qué pasó vamos ay!

Don Ramón - Qué pasó, que pasó, vamos ay !! https://www.youtube.com/watch?v=u35jIrN_tyg