Gaius and Merlin in “A Remedy to Cure All Ills”

Uther's right. It's time I stepped down.

What are you doing?

I cannot stay when there's no longer a use for me.

You're not leaving?

I believe it's for the best.

Then I will come with you.

Merlin, you're like a son to me. I never expected such a blessing so late in life.

And you are more than a father to me.

Then as a father, I must tell you, you must remain here. Camelot is where you belong.

But you belong here too.

Not any more. Merlin, you must promise me you will not waste your gifts.

My gifts mean nothing without you to guide me.