# Quote — Yuval Noah Harari, Sapiens

> Only around the end of the nineteenth century did scientists come across a few observations that did not fit... with Newton's laws, and these led to the next revolution... the theory of relativity and quantum mechanics.

- Author: [Yuval Noah Harari](https://www.leafyquotes.com/yuval-noah-harari.md)
- Book: [Sapiens](https://www.leafyquotes.com/yuval-noah-harari/sapiens.md)
- Source: [Wikiquote](https://en.wikiquote.org/wiki/Yuval_Noah_Harari#Chapter_14:_%22The_Discovery_of_Ignorance%22) ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))
- Quote page: https://www.leafyquotes.com/yuval-noah-harari/sapiens/only-around-the

## More from this book

> [P]erhaps happiness is synchronising... personal delusions.. with... prevailing collective delusions.

[Quote page](https://www.leafyquotes.com/yuval-noah-harari/sapiens/p-erhaps-happiness-is-synchronising.md)

> We have... increased food production, built cities, established empires and created... trade networks. But did we decrease... suffering..? ...[M]assive increases in human power did not necessarily improve the well-being of individual Sapiens, and usually caused immense misery to other animals.

[Quote page](https://www.leafyquotes.com/yuval-noah-harari/sapiens/we-have-increased.md)

> [C]ontradictions are culture’s engines, responsible for... creativity and dynamism... Just as... clashing musical notes... force... music forward.., discord in... thoughts, ideas and values compel us to think, reevaluate and criticise. Consistency is the playground of dull minds.

[Quote page](https://www.leafyquotes.com/yuval-noah-harari/sapiens/c-ontradictions-are-cultures.md)