Question: Have you learned more from you parents or from your experiences in the world? 

Today's proverb is often used in Swahili to describe a person who makes a mistake that could have been foreseen and suffers negative consequences... like the truck driver in this picture from Oxfordshire, UK. Regardless of what your parents taught you (or failed to teach you), you will eventually have to confront the harsh realities of life and learn from experience.
See also: If a child cries for a razor, give it to him (Mtoto akilia wembe, mpe)

He who is not taught by his parents is taught by the world. (Asofunzwa na wazazi, hufunzwa na ulimwengu)
Here's a poem by the poet Akilimali Snow-White about this proverb. (My translation from the original Swahili)

In the age they fooled me, my old folks in raising me,
I failed to learn the new movements of the world.
Today I please myself, to the people of the world, listen:
He who is not taught by his parents, is taught by the world.

I couldn’t have done any work without humbling myself before them,
Obeying to flatter them, then to serve them,
Even when I pleased them, they taught me with intention,
He who is not taught by his parents, is taught by the world.

Now I can speak European languages without difficulty,
like English and others too,
With effort I learn, and even they have raised me.
He who is not taught by his parents, is taught by the world.

I can converse without blemish,
And lead amidst evil, removing the blemish,
In the end the place pleases, one step towards harmony,
He who is not taught by his parents, is taught by the world.

There is nowhere I have overlooked, without investigation,
All sides examined, knowledge I have taken,
I even know how to sell products and buy,
He who is not taught by his parents, is taught by the world.

The amount which I have learned, not a little by fumbling,
I am pleasing where I come from, I employ good work
It’s hard to scorn, how it raises me,
He who is not taught by his parents, is taught by the world.

It’s not right to ignore what you don’t know
Try to investigate, and then analyze,
When your intention is tightened, you can’t fail to know a thing,
He who is not taught by his parents, is taught by the world.

The tasks I taught myself, my father didn’t know
He didn’t know English, or selling and buying,
but only praising oneself, that was when I, the child, knew,
He who is not taught by his parents, is taught by the world. 

I give more for you, you all who helped me,
All of you who’ve taught me, Lord give you health
God fill you all with happiness, and return goodness to you,
He who is not taught by his parents, is taught by the people of the world.
- Diwani ya Akilimali

What do you think about this poem? What does it mean? Can you improve the translation?

Fikeni E. M. K. Senkoro (1988) wrote of this poem (my translation):

One day a renown businessman wanted to hire an assistant. He received many resumes, but only two candidates met his high standards: Alice and Bob. To help him decide, he called both, and they each agreed to come in for an interview the following morning. "9 AM. Look sharp and don't be late." The manager warned.

The next morning Alice woke up early, donned her best suit and got to the village bus station at 8:00am. "Better safe than sorry," she thought.  On the way to town, the front of the minibus began to smoke. The driver pulled over in the bush and told all the passengers to get out. Just then it started to rain. Alice tried to wave down each bus that passed, but they were all full, so she had to walk on foot. 9am came and went, but Alice was still miles from town and the rain was getting harder. "I must keep going." she thought, "Better late than never."

Meanwhile in town, Bob woke up in his apartment, and saw the sun was high in the sky. He sat up suddenly. "Oh no! Why did my alarm fail?" He looked at the clock on his wall: 9:00 am. "Forget it. Even if I leave right now, I'll still be late, and they'll never hire someone who is late." So Bob, feeling depressed, went back to sleep.

At 10:30, Alice finally made it to the office and knocked on the door, her neatly pressed suit now dripping and muddy. The businessman answered.
"I warned you to be on time, yet you are over an hour late, how can you expect me to give you this job?"
Then Alice explained all that had happened.
"I have learned a lot about you from this story, Alice. When you have a purpose in mind, you persist despite and obstacles and don't give up, even when it seems too late. In fact, you are the first to arrive today. The other candidate did not show up at all. The job is yours."

Great achievements and inventions often begin with a lot of failures, but in the long run, persistence and learning are rewarded.  People make a lot of mistakes (to err is human), but life is very patient with us, giving us lots of chances to learn from them and try again, as long as we don't give up.

Some say the proverb "Better late than never" comes from The Canterbury Tales, written by Chaucer around the 1390s.

Others trace the proverb to an even earlier origin, in Livy's History of Rome, written around 20 BC:

A similar saying in English is "It's never too late." 
Here's a proverb that relates to the same principle in Hindi:

And here's an English proverb that often means the opposite of this one:

Watu wengi wanaogopa kuuliza maswali kwa sababu wanahofia kuonwa mjinga. Lakini kuuliza maswali ni njia bora ya kujifunza kutoka kwa wengine. 

Pia kuuliza maswali husaidia wenzako. Je umewahi kusita kuuliza swali kwani ulidhani wengine wameshaelewa... lakini baadaye uligundua hawakuelewa pia? 

Kiingereza

Meaning it's better to be satisfied with what you have, rather than risking it for a chance at a larger reward.

This proverb turns out to be very old indeed. It comes from an ancient book called "The Story of Ahikar" also known as the "Proverbs of Ahiqar." 

The Story of Ahikar (page 110)
The book tells the story of an advisor to the ancient Assyrian and Egyptian rulers. It was probably written about 600 BCE, with the earliest surviving fragments dating to about 500 CE. 

Similar proverbs from around the world...
French:

Japanese

Italian

And one more for fun...

Do you think this proverb is good advice? When is it better to go with a sure thing now or take a chance and search for something better?