From the Book of Proverbs :

Argue your own case with your neighbor but do not reveal another person's secrets. 11,17

Put all your trust in the Lord and do not rely on your own understanding. 23,9

Let your eyes look straight before you, fix your gaze upon what lies ahead. 4,25

The fear of the Lord is the beginning of knowledge. 1,7

Anyone who despises a hungry person does wrong but anyone who is generous to the poor will be happy. 14,23

Man plans his journey by his own wit, but it is the Lord who guides his steps. 16,9

Commit to the Lord all that you do and your plans will be fulfilled 16,3

A soft answer turns away anger. 15,1

Through wisdom a house is built and through understanding it is established. 24,3

From various nations in the world :

The person who says it cannot be done should not interrupt the person doing it. China

Life is alike the flame of a lamp exposed to the wind. Japan

The one who speaks the truth is always at ease. Persia

Everyone must row with the oars he has. England

Kind words don't wear out the tongue. Denmark

The palest ink is better than the best memory. China

When a proud man hears the other man praised, he feels himself injured. England

Once the game is over, the king and the pawn go back in the same box. Italy

(c) Fr. Pius Sammut, OCD. Permission is hereby granted for any non-commercial use, provided that the content is unaltered from its original state, if this copyright notice is included.