The writer and entrepreneur James Clear has written a great article on how to be more productive by using this simple matrix, which was inspired by former US President Dwight Eisenhower.

Both the NewYork-Presbyterian Hospital and the American Heart Association have created Spotify playlists of songs that have just the right tempo to help save someone’s life.

As Paul Graham points out in his essay Write Like You Talk, and as marketing guru Seth Godin suggests in his blog post Talker’s Block, you can probably get your point across more effectively if you just write it the same way you would say it in conversation.

This emphasis on writing in a conversational style is also used by the folks at Head First Labs, the creators of study guides on subjects ranging from physics to WordPress.

- Robert and Michele Root-Bernstein in their book Sparks of Genius