Two wrongs don't make a right.	someone done sth bad to you, trying to get revenge will only make thing worse
The pen is mighter than the sword.	ideas and words is more effective than trying to force people to do what you want
When in Rome, do as the Romas.	act the way that the people around you are acting
The squeaky wheel gets th grease.	you can get better service if you complain about sth
When the going gets tough, the tough get going.	strong people don't give up when they come across challenges - the work harder
No man is an island.	everyone needs help from other people