The Admiral would not be convinced by a cat in a ship.

Saru

I'd rather regret something I did than something I didn't

Burnham

I will be honest, ensign, I have not felt this mistrusting of [Burnham] since we served on the Shenzhou. I assumed, after all we have endured together, this feeling would never return.

Saru

Willa: Dysfunction aside, y'all make a pretty good team.
Reno: Dysfunction is the team.
Stamets: We've just accepted it.
Reno: No, we haven't.

The Federation is its people. I can't separate the two anymore.

Burnham

Willa: Your relationship isn't very professional.
Stamets: It's how we work.
Reno: I've been trying to raise the bar.

Stamets: Are these values from a magnetic or a mass spectrometer?
Tilly: Duh
Reno: Which means magnetic.
Stamets: I know what duh means
Reno: Can we just irradiate your entire personality?

Man: April 5th is my birthday.
Georgiou: A Terran holy day.
Man: April 5th, 2063. First ever contact between Terrans and a Vulcan survey ship. But then your people slaughtered everybody on board.
Georgiou: Vulcans need to learn to stay in their lane sometimes and it's not like it's a HIGH holy day.

Man: There are very few species that do things simply to do them.
Georgiou: We're mostly untroubled by pesky motivations. Except for revenge. We do like that one.
Man: It seems you've created an empire based on the maxim,'Because we feel like it.'

Let's show them who we are.

Burnham

Georgiou: Much as I like being fetishized... and I do... I'll answer your questions if you answer mine first.
Man: No, you won't really do that.
Georgiou: Correct.

Nhan: Nhan. Security officer. USS Discovery. SFB534-0679
Starfleet AI: Failure to comply is insubordination.
Nhan: I'm sorry.
Starfleet AI: Now, how long was the duration...
Nhan: Nhan, D. Security officer. USS Discovery. Throw me in the brig, hologram.

Star Trek: Discovery Quotes

I am neither one for following orders nor giving them. The solar winds are my mistress and I follow her wherever she beckons.

Mudd

Burnham: Words aren't enough, are they? Nine hundred and thirty years.
Saru: I trust that what matters most will have endured.