You might learn that haste makes waste if you do something so fast, resulting in mistakes.

VOA: special.2011.03.27

I am not trying to pull a fast one on you.

VOA: special.2009.07.19

I mean, he got to me so fast.He was nowhere near me. Sounds like you were very lucky.

VOA: standard.other

"Ask any Kenyan, and every Kenyan will say,' Please can you go sign that thing very fast,".

VOA: standard.2009.10.13

(ECHOING BOOM) (BREATH TREMBLING) You're impossibly fast and strong.

VOA: standard.other