Thomas Jefferson still survives.

Thomas Jefferson still survives.

No flying machine will ever fly from New York to Paris. -- Orville Wright.

No flying machine will ever fly from New York to Paris. -- Orville Wright.

I feel certain that I'm going mad again. I feel we can't go through another of those terrible times. And read more

I feel certain that I'm going mad again. I feel we can't go through another of those terrible times. And I shan't recover this time. I begin to hear voices.

Cheer up, children, I am all right.

Cheer up, children, I am all right.

I killed the President because he was the enemy of the good people, the good working people. I am not read more

I killed the President because he was the enemy of the good people, the good working people. I am not sorry for my crime.

Good people are always so sure they're right.

Good people are always so sure they're right.

I desire to leave to the men that come after me a remembrance of me in good works.

I desire to leave to the men that come after me a remembrance of me in good works.

The abdomen, the chest, and the brain will forever be shut from the intrusion of the wise and humane surgeon. read more

The abdomen, the chest, and the brain will forever be shut from the intrusion of the wise and humane surgeon. -- Sir John Eric Ericksen, British surgeon, appointed Surgeon-Extraordinary to Queen Victoria 1873.

If I had thought about it, I wouldn't have done the experiment. The literature was full of examples that said read more

If I had thought about it, I wouldn't have done the experiment. The literature was full of examples that said you can't do this. -- Spencer Silver on the work that led to the unique adhesives for 3-M Post-It Notepads.