A lone (or a few) rotten eggs in a basket...

Dunno (a.k.a. too lazy to search) who said this first, but:

A lone (or a few) rotten eggs in a basket makes it seem like a basket full of nothing but rotten eggs. 

Anyways, I think we can learn two lessons from this saying:

If you give a little love... #quoteme #quotethem

Dunno if anyone's said this or something like this before, but it's a theme I believe in and that has caught my attention lately:

"If someone did some little nice thing for you, do it many times over to others."

Here's an example on Quora: http://qr.ae/1g5WA.