"The pen is mightier than the sword."

Trying to convince people with ideas and words is more effective than trying to force people to do what you want.

"When in Rome, do as the Romans."

Act the way that the people around you are acting. This phrase might come in handy when you're traveling abroad notice that people do things differently than you're used to.

"No man is an island."

You can't live completely independently. Everyone needs help from other people.

"Fortune favors the bold."

People who bravely go after what they want are more successful than people who try to live safely.