Art is never finished, only abandoned. - Leonardo da Vinci Share on X Insanity: doing the same thing over and over again and expecting different results. - Albert Einstein Share on X I can calculate the motion of heavenly bodies, but not the madness of people. - Isaac Newton Share on X You must be ready to give up even the most attractive ideas when experiment shows them to be wrong. - Alessandro Volta Share on X UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity. - Dennis Ritchie Share on X It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge. - Enrico Fermi Share on X That's one small step for a man, one giant leap for mankind. - Neil Alden Armstrong Share on X Be less curious about people and more curious about ideas. - Marie Curie Share on X When one door closes another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us. - Alexander Graham Bell Share on X There never was a good war or a bad peace. - Benjamin Franklin Share on X Everything we call real is made of things that cannot be regarded as real. - Niels Bohr Share on X Following the light of the sun, we left the Old World. - Christopher Columbus Share on X I have not failed. I've just found 10,000 ways that won't work. - Thomas Alva Edison Share on X You cannot teach a man anything; you can only help him find it within himself. - Galileo Galilei Share on X The pure culture is the foundation for all research on infectious disease. - Robert Koch Share on X In the new era, thought itself will be transmitted by radio. - Guglielmo Marconi Share on X In the fields of observation chance favors only the prepared mind. - Louis Pasteur Share on X True greatness is when your name is like ampere, watt, and fourier—when it's spelled with a lower case letter. - James Watt Share on X International language of the forthcoming generations will be solely and by necessity only a language of art. - Ludwik Lejzer Zamenhof Share on X I was captured for life by chemistry and by crystals. - Dorothy Hodgkin Share on X Time does not wait ; do not spend it on waiting. - Judith Resnik Share on X If we die, we want people to accept it. We are in a risky business, and we hope that if anything happens to us, it will not delay the program. The conquest of space is worth the risk of life. - Gus Grissom Share on X It's a very sobering feeling to be up in space and realize that one's safety factor was determined by the lowest bidder on a government contract. - Alan Shepard Share on X The route to the target is more important than the target. We are going to go for the target, but we enjoy the route as well. - Ilan Ramon Share on X The president felt that it was important to send an ordinary citizen to experience the excitement of space travel as a representative for all Americans. - Christa McAuliffe Share on X Life science research can be done on multiple platforms. Since we have a very small number of people flying into space, the more people you have, the better. - Laurel Clark Share on X The path from dreams to success does exist. May you have the vision to find it, the courage to get on to it, and the perseverance to follow it. Wishing you a great journey. - Kalpana Chawla Share on X Whether or not you reach your goals in life depends entirely on how well you prepare for them and how badly you want them. - Ronald McNair Share on X Intelligence is the ability to adapt to change. - Stephen Hawking Share on X