Series on wise software catchphrases

So I follow Code Wisdom on twitter:
https://twitter.com/CodeWisdom
What the account basically does is tweet quotations by famous and not so famous software developers. The quotes are wisdom gathered through many years of working with software development.

In my day to day job, I work with quite a few junior developers.
As a senior developer, it is my job to teach them the ways of software development; one of the things that I find most important for is to pass on some of the stuff I have learned.

But also I find it important to pass on some of the stuff other people have learned throughout the years.
Teaching them about my experience comes pretty naturally in the day to day tasks, but I thought it would be good to do a blog post series on some of the wisdom gathered by others along the way and add my reason why I find it valuable.
This way I can pass on the bigger picture of the software development landscape.

So in the coming weeks, I will publish a series of my take on software development wisdom. I will strive to make the post short and on the point.

1st post - We value code that is easy to maintain over code that is easy to write
2nd post - One of the best programming skills you can have is knowing when to walk away for awhile.
3rd post - Are you smart enough to debug your code?