the better to

(all) the better to (do something)

Easier or more effective to do something as a result. A: "Unfortunately, you're first project is going to be pretty detailed and labor-intensive." B: "That's all right—all the better to learn the company's data-entry system." A: "Grandma, your glasses are so big!" B: "The better to see you with, my dear."
See also: better
Farlex Dictionary of Idioms.

the better to —

so as to — better.
1986 Peter Mathiessen Men's Lives Francis ran both motors with their housings off, the better to tinker with them.
See also: better
Farlex Partner Idioms Dictionary
See also:
  • (all) the better to (do something)
  • control over
  • control over (someone or something)
  • keep (something) dark
  • keep it/something dark
  • keep something dark
  • from the sublime to the ridiculous
  • have half an eye on (someone or something)
  • have one eye/half an eye on something
  • keep half an eye on (someone or something)