Common themes are that not all things are what they seem to be; money cannot buy happiness; the grass is not always greener on the other side of the fence; virtue has its own reward and other common statements about life in general.
It is best to prepare for the days of necessity
Clumsy jesting is no joke
It is easy to propose impossible remedies
Union gives strength
People often grudge others what they cannot enjoy themselves.
Better starve free than be a fat slave
We often give our enemies the means of our own destruction
A little thing in hand is worth more than a great thing in prospect
Never trust the advice of a man in difficulties
It is easy to despise what you cannot have
One bad turn deserves another
Self-conceit may lead to self-destruction
Work before play
Treat others the way you want to be treated
One mans pleasure may be another mans pain
Better no rule than cruel rule
Greed often overreaches itself
He that has many friends, has no friends
Plodding and plodding wins the race
It is not only fine feathers that make fine birds
Love can tame the wildest
Little friends may prove great friends
Do not count your chickens before they are hatched
Wealth unused might as well not exist
Much outcry, little outcome
We would often be sorry if our wishes were gratified
Only cowards insult dying majesty
Better beans and bacon in peace than cakes and ales in fear
Kindness affects more than severity
It is easy to be brave from a safe distance
Appearances are deceptive
Injuries may be forgiven, but not forgotten