“All I want is half an hour’s bloody genius” – Colin Chapman

Colin Chapman, the inspirational creator of the Lotus car company and F1 team was leaving the office one evening when he noticed that the light was still on in his chief designer’s office. He poked his head round the door and said… “I don’t want you staying here ’til midnight working on stuff. All I want is half an hour’s bloody genius”.

https://en.wikipedia.org/wiki/Colin_Chapman