“We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.” – Richards Feynman

“Engineers … are not superhuman. They make mistakes in their assumptions, in their calculations, in their conclusions. That they make mistakes is forgivable; that they catch them is imperative.” – Henry Petroski

“Success is one of the possible outcomes. The probability is uncertain, but it is above zero.” – Elon Musk

“The Habits of a vigorous mind are formed in contending with difficulties. All history will convince you of this, and that wisdom and penetration are the fruits of experience, not the lessons of retirement and leisure.” – Abigail Adams to John Quincy Adams

“The longer I live, the more I read, the more patiently, I think and the more anxiously I inquire; the less I seem to know.” – John Adams

“…the independent-minded are the gluttons of curiosity, who keep eating even after they’re full.” – Paul Graham

“It is difficult to accept that the best learning road is slow, and that doing poorly now is essential for better performance later. It is so deeply counterintuitive that it fools the learners themselves” – David Epstein

“Listen; you’ll never learn anything by talking. The measure of an intelligent person is the ability to change his mind.” – Clarence “Kelly” Johnson

“Scientists investigate that which already is; engineers create that which has never been.” – Albert Einstein

“Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.” – Antoine de Saint-Exupéry

“A good engineer does not know everything. He knows how to find it out.” – Dr. J Celentano

“Engineering is the art of directing the great sources of power in nature for the use and convenience of man.” – Thomas Tredgold