Prof. Theodore von Kármán

Hungarian-born Theodore von Kármán, whose research contributed greatly to the achievement of supersonic flight, makes an aerodynamic point on a blackboard. “High speed has its uses,” he once said. “For me personally I prefer a slower pace. I like nothing better than to think of myself riding through Paris as my parents did in old Budapest-in a fiacre with a coachman and two horses.”

First All Metal Wing

At the Junkers plant in Dessau, Germany, five factory employees stand on an experimental all-metal wing in 1915 to demonstrate its superior strength. The wing’s internally braced structure enabled it to support the plane’s weight without the need for drag-producing wires and struts.

Lewis Carroll

Another Rule is, when you have written a letter that you feel may possibly irritate your friend, however necessary you may have felt it to so express yourself, put it aside till the next day.
 
“My second Rule is, don’t fill more than a page and a half with apologies for not having written sooner!”
 
Eight or Nine Wise Words about Letter-Writing, Lewis Carroll

Rudolf Emil Kalman

“Whenever a model is built, it is always proper to ponder the basic scientific question: is the model really based on the data or is an artifact displaying the prejudices of its creator?” Rudolf Emil Kalman, Kyoto Prize address

Maxwell

An experiment, like every other event which takes place, is a natural phenomenon; but in a scientific experiment the circumstances are so arranged that the relations between a particular set of phenomena may be studied to the best advantage.

James Clerk Maxwell, 1876