The unhappy derive comfort from the misfortunes of others.

Aesop

The unhappy derive comfort from the misfortunes of others. - Aesop

Sad

Some suggestions for you :

United we stand; divided we fall.

Better be wise by the misfortunes of others than by your own.

What a splendid head yet no brain.

While I see many hoof marks going in, I see none coming out. It is easier to get into the enemys toils than out again.

Familiarity breeds contempt.

In union there is strength.

I am sure the grapes are sour.

Please all and you will please none.

The level of our success is limited only by our imagination and no act of kindness, however small, is ever wasted.