Invention is 1% inspiration and 99% perspiration

I've never made a mistake. I've only learned from experience.

I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours - and thrived on it.

Failure is the most effective technique to optimize strategic planning, implementation and processes.

The dove is my emblem.

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

So far as the religion of the day is concerned, it is a damned fake ... Religion is all bunk.