This is a valuable piece of advice for people who aren't aware of their surroundings.
Carolyn Long
18- I try to follow this advice!
Asifa farzana
# 25: A valuable advice , Yes wall has supper powerful ear if you travel to North Korea.
Chang Park
This is good advice.
Mary ALice Blanchard
That's a very good proverb. It means something important. You never know who is around the corner. Even if it is not the person you might be talking about, it could be a relative of that person.
Jim Wattier
The proverb is great, but why does the guy on the wall look like Hitler????