# Quote — Richard Koch, The 80/20 Principle

> Marketing, and the whole firm, should devote extraordinary endeavour towards delighting, keeping for ever and expanding the sales to the 20 per cent of customers who provide 80 per cent.

- Author: [Richard Koch](https://www.leafyquotes.com/richard-koch.md)
- Book: [The 80/20 Principle](https://www.leafyquotes.com/richard-koch/the-8020-principle.md)
- Page: 103
- Source: [Wikiquote](https://en.wikiquote.org/wiki/Richard_Koch#The_80/20_principle:_the_secret_of_achieving_more_with_less_(1999)) ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))
- Quote page: https://www.leafyquotes.com/richard-koch/the-8020-principle/marketing-and-the

## More from this book

> Business strategy should not be a grand and sweeping overview. It should be more like an under view, a peek beneath the covers to look in great detail at what is going on.

p. 58 — [Quote page](https://www.leafyquotes.com/richard-koch/the-8020-principle/business-strategy-should.md)

> Conventional wisdom is not to put all of your eggs in one basket. 80/20 wisdom is to choose a basket carefully, load all your eggs into it, and then watch it like a hawk.

p. 28 — [Quote page](https://www.leafyquotes.com/richard-koch/the-8020-principle/conventional-wisdom-is-not.md)

> Few people take objectives really seriously. They put average effort into too many things, rather than superior thought and effort into a few important things. People who achieve the most are selective as well as determined.

p. 142 — [Quote page](https://www.leafyquotes.com/richard-koch/the-8020-principle/few-people-take.md)