A good friend you get for nothing, an enemy you have to buy.
You buy yourself an enemy when you lend a man money.
Rejoice not at your enemy's fall, but don't pick him up, either.
One old friend is better than two new ones.
Make new friends, but don't forget the old ones.
A friend remains a friend up to his pocket.
Treat me like a rabbi; watch me like a thief.
When a thief kisses you, count your teeth.Mountains cannot meet, but men can.
Image: ‘Two men playing chess in Taras Schevchenko park’ from olechko