"Thank you for not taking a vacation but coming in to do extra work".
"Wow such impressive work that you submitted a fellowship application 3 weeks after giving birth" (even though I did not get this grant in the end).
"Thanks for checking your email continuously on the day in the week that you're not working (and hence are not being paid)".
"What dedication that even though you have quit your post-doc job and have 3 weeks of vacation days left, you're still coming in to finish these experiments that you're doing".
Just a selection of things that nobody has ever said to me, ever. And this is (finally) making me realize that whenever you go this extra mile for work, you should do it for you and not to get external validation or praise. Because people tend to not see this effort that you put in in these invisible moments, while at the same time this effort may seem very large to yourself.