If one does not fail at times, then one has not challenged himself.
Ferdinand Porsche
If you're doing something the same way you have been doing it for ten years, the chances are you are doing it wrong.
Charles Kettering
I don’t sell future for instant success.
Werner von Siemens
Can one think that because we are engineers, beauty does not preoccupy us or that we do not try to build beautiful, as well as solid and long lasting structures?
Gustave Alexandre Eiffel
There are more people who surrender, than those who fail.
Henry Ford
If it weren't for the last minute nothing would get done.
Mark Twain
I hate vacations. If you can build buildings, why sit on the beach?
Philip Johnson
Rather decide almost right than exactly wrong.
Johann Wolfgang von Goethe
By failing to prepare, you are preparing to fail.
Benjamin Franklin
You can’t build up a reputation on what you are going to do.
Henry Ford