What is the best quote you ever heard?

"If you don't ask for anything, don't be surprised when you get nothing"

-- A former manager on the subject of my negotiating skills.

While they were saying among themselves it cannot be done, it was done.

Helen Keller

There are a lot of great quotes from her, but that is my favorite.

https://www.brainyquote.com/authors/helen-keller-quotes

"Never accept a no from someone who doesn't have the power to say yes"

— Eleanor Roosevelt

“ Fearing the obstacles , worst people don't start . Mediocre people rest(or stop) when they face obstacles. Best people don't stop even if they are getting defeated by obstacles. ”

“ People may scold or praise, Wealth may come or go, Death may be now or Years after, Great Person will not deviate from right path(or goal) . ”

These both were quoted by Bhartṛhari in his book Nitiśatakam (written in c. 5th century CE).

“ Don't rant that you don't have , not considering everything you have. There is always a path to happiness. ”

This one is quoted by writer D.V. Gundappa written in his book "Mankutimmana Kagga" (which is also a book of wisdom published in 1943) .

"It is sad to say that all the people who know how to run a country are busy driving cabs or cutting hair." Peter Ustinov

"The first step to solving any problem is to remain calm"

I forget where I heard this. But it's helped me a lot.

"In Theory, Theory and Practice are the same. In Practice they're not." Charlie Munger

So many.

Top of mind: without data and given the choice between your opinion and mine, I’ll take mine; show me the data.

On worrying: if you can do something about it, do so and don’t worry. If you can’t, don’t, and don’t worry.

World outlook: Happiness is a choice.

"The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt." -- Bertrand Russell

If you like computing-focused quotations, Jon Bentley's Programming Pearls has the chapter "Bumper-Sticker Computer Science".

"The greatest enemy of a good plan, is the dream of a perfect plan" -- Carl Von Clausewitz, 1780-1831 Prussian general and military theorist

“Everybody has a plan until they get punched in the mouth”

-- Mike Tyson

To see a miracle, be the miracle.

- Morgan Freeman (as God) in his deep baritone to Jim Carey (as Bruce) in Bruce almighty

Edit: formatting

"Impossible is not a fact. It's an opinion." M. Ali

On the stock market: "Markets are people." B. Baruch

PLEASE ACCEPT MY RESIGNATION. I DON'T WANT TO BELONG TO ANY CLUB THAT WILL ACCEPT ME AS A MEMBER.” ― Groucho Marx, Groucho and Me