Former Intel CEO and chairman Andy Grove had a famous dictum: Only the paranoid survive.

FORBES: Leaders Balance Urgency And Patience

But most other politicians adhere to Benjamin Jowett's famous dictum about apologies: never!

ECONOMIST: Bagehot

Although this teaching lacked the heroic content Sullivan felt architecture required, he did draw from it his famous dictum about form and function.

ECONOMIST: Poet in stone and steel