How do I store strings or text

For example i need a dialogue system and i have 1000 lines that the characters must say. Where do i store the text? I can't find, surprisingly, anything on this( searched google) , and using on start of layour set array at x to "text" just seems off. How would i store strings and text i already know from the beginning ( so introduced while in the editor) ?

Create a text file and import it to your project.
Use AJAX to request this file and then parse the text with tokenat, tokencount expressions (with newline as separator).
There are plenty of examples here.

Or you can use CSV plugin:
viewtopic.php?t=64326&start=0

Or built-in XML plugin.
Here is a dialog system where lines are loaded from XML:
zelda-dialogue-system-capx-and-demo-included_t182559