Ryan Gosling actually wrote this when trying to understand his character, and used a technique called "dropping in" to analyze writing from Nabokov's Pale Fire. He approached Villeneuve about it and he added it to the film
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Dropping-in is a technique Tina [Packer] and Kristin Linklater developed together in the early 1970s to create a spontaneous, emotional connection to words for Shakespearean actors. In fact, “dropping in” is integral to actor training at Shakespeare & Co. (the company the Linklater’s founded) a way to start living the word and using it to create the experience of the thing the word represents.
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Dropping-in is a technique Tina [Packer] and Kristin Linklater developed together in the early 1970s to create a spontaneous, emotional connection to words for Shakespearean actors. In fact, “dropping in” is integral to actor training at Shakespeare & Co. (the company the Linklater’s founded) a way to start living the word and using it to create the experience of the thing the word represents.