Add some new testimonials (#1921)

Author: charliermarsh

README.md

@@ -74,6 +74,13 @@ of [FastAPI](https://github.com/tiangolo/fastapi):
 > Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually
 > running and checking the code.
 
+[**Nick Schrock**](https://twitter.com/schrockn/status/1612615862904827904), founder of [Elementl](https://www.elementl.com/),
+co-creator of [GraphQL](https://graphql.org/):
+
+> Why is Ruff a gamechanger? Primarily because it is nearly 1000x faster. Literally. Not a typo. On
+> our largest module (dagster itself, 250k LOC) pylint takes about 2.5 minutes, parallelized across 4
+> cores on my M1. Running ruff against our *entire* codebase takes .4 seconds.
+
 [**Bryan Van de Ven**](https://github.com/bokeh/bokeh/pull/12605), co-creator
 of [Bokeh](https://github.com/bokeh/bokeh/), original author
 of [Conda](https://docs.conda.io/en/latest/):
@@ -82,7 +89,13 @@ of [Conda](https://docs.conda.io/en/latest/):
 > ~20s. This is an enormous quality of life improvement for local dev. It's fast enough that I added
 > it as an actual commit hook, which is terrific.
 
-[**Tim Abbott**](https://github.com/charliermarsh/ruff/issues/465#issuecomment-1317400028), lead developer of [Zulip](https://github.com/zulip/zulip):
+[**Timothy Crosley**](https://twitter.com/timothycrosley/status/1606420868514877440),
+creator of [isort](https://github.com/PyCQA/isort):
+
+> Just switched my first project to Ruff. Only one downside so far: it's so fast I couldn't believe it was working till I intentionally introduced some errors.
+
+[**Tim Abbott**](https://github.com/charliermarsh/ruff/issues/465#issuecomment-1317400028), lead
+developer of [Zulip](https://github.com/zulip/zulip):
 
 > This is just ridiculously fast... `ruff` is amazing.