With accent marks:
Когда́ я ем, я глух и нем.
When I eat I am deaf and mute.
This Russian saying is well known to all Russian kids. Parents tell this to their children so they don't get distracted when eating and focus on finishing food first.
To be noted, some creative kids (or adults) came up with the opposite version of this saying: когда я кушаю, я говорю и слушаю.
Other Russian proverbs
Poor people are inventive.
Better late than never.
Оne sees the mote in another's eye and ignores the log in his own.
Start taking care of the dress while it's new, and of your honor while you are young.
Crowded, but not aggrieved.
Do not dig a hole for another one, you will fall into it yourself.
Fear has big eyes.
If I knew where I would fall, I would lay some straw there.