Thames Valley Police have released a statement written by stabbed teen Temur Qureshi before his death - in which he reflected on the impact of knife crime on his life.
Mr Qureshi, 19, was attacked in the Langley area of Slough on September 30 last year.
He died within an hour of being stabbed - but gave the name of his killer to police shortly beforehand.
The knifeman, Jack Patterson, was jailed last week, having been convicted of manslaughter at trial in April.
Mr Qureshi was friends with Adbul Aziz Ansari, an 18-year-old who was murdered in Slough in May 2022.
Police have released a statement written by Mr Qureshi in the wake of Mr Ansari's death, in which he reflects on the devastating impact of knife crime.
In the statement - made a year before he was himself killed - Mr Qureshi calls knife violence a 'pandemic.'
He said: "Imagine you're walking home from school one day, feeling excited about your weekend plans.
"Suddenly, you hear a commotion up the road. You see a group of people shouting and arguing, then one of them pulls out a knife. Your hearts starts racing, you feel scared and helpless.
"Sadly, this is a reality for far too many people, and it's why we need to talk about the seriousness of knife crime violence and act upon it.
"The number of people killed with a knife in England and Wales in 2021/22 was the highest on record for 76 years.
"This is a pandemic and we need to find a cure. If no cure, any sort of contribution to tackle this is always better than nothing.
"When someone picks up a knife to kill another person, they're not just hurting that person, they're destroying a whole family. A family who won’t live the same anymore.
"They're leaving scars that you can't see with your eyes. And will never be the same people again after their loss ...
"I want to do this because I’ve seen what has happened to me, my closest family and friends and how it's affected us, so why does another young person need to go through the same things when really and truly it’s all for nothing ...
"I hope to see a decrease in young lives lost to the streets."
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