Colective wisdom

Every cloud has a silver lining.
Bad times will eventually give way to better times. (The presence of silver lining means that the sun is behind the cloud and will eventually emerge.)
Empty bags can’t stand upright.
A poor or hungry person cannot discharge his duties well.
Early bird catches the worm.
One who starts early on the work has higher chance of success.
Eagles don’t catch flies.
Eagles catch bigger prey than flies, don’t they? Don’t take trivial matters to senior leaders in your organization. You have to resolve them, not they.
Don’t throw the baby with the bathwater.
Don’t discard something valuable while getting rid of something worthless.
Don’t think there are no crocodiles because the water is calm.
Everything calm and peaceful doesn’t mean there are no dangers around.
Don’t put all your eggs in one basket.
Don’t put all your effort into a single course of action, venture, investment, goal, or the like, because if it doesn’t work, you lose everything.
Don’t open a shop unless you know how to smile.
It’s difficult to attract customers without a pleasant persona.
Don’t kill the goose that lays golden eggs.
If you kill a goose that lays golden eggs, you destroy something that makes lot of money for you.
Don’t judge a book by its cover.
Just like you can’t form an opinion of a book just by looking at its cover, you can’t form an opinion about someone (or something) from their outward appearance.
Don’t empty the water jar until the rain falls.
Don’t quit something, say a job, before securing its replacement.
Don’t cross the bridge till you come to it.
Deal with a situation when it happens and not unnecessarily worry about it in advance.
Don’t count your chickens before they hatch.
Don’t make plans based on future events that may not happen.
Don’t cast pearls before swine.
Don’t offer something valuable to someone who doesn’t value it.
Don’t carry coals to Newcastle.
In the past, Newcastle was known for its coal mines. Coal was mined here and taken to other parts of England. So, if you carry coal to Newcastle, you’re doing unnecessary work.
Don’t bite the hand that feeds you.
Don’t act badly toward the person who has helped you or from whom you derive some benefits, for you may lose those benefits in future.
Doctors make the worst patients.
It’s difficult to advice a person on a matter in which he is an expert. This is because he thinks that he already knows the best about what to do.
Do as you would be done by.
Treat others like the way you would like to be treated. Some people, for example, ingratiate themselves with the powerful but treat less powerful with contempt. Don’t be like them.
Discretion is the better part of valor.
It is wise to be careful and not show unnecessary bravery.
Different strokes for different folks.
Different people have different needs and wants, and we should be respectful to them.
Curses, like chickens, come home to roost.
The consequence of wrongdoings always catches up with the wrongdoer.
Curiosity killed the cat.
Enquiring into others’ work can be dangerous. One should mind own business.
Cross the stream where it is shallowest.
Do things in the easiest possible way.
Cowards die many times before their death.
Cowards suffer the feared effects of death many times in their lives.
Clothes do not make a man.
A person’s character can’t be judged by his/her clothing and outward appearance.
Birds of a feather flock together.
People with similar nature seek out each other’s company.
Better to be poor and healthy than rich and sick.
Health is more important than money.
Better late than never.
It is better to get something (you desire) late than get it never.
Best things in life are free.
Most valuable things are often free.
Be slow in choosing, but slower in changing.
Choose things or people after diligence, but once you choose, stick for long.