It is just as surprising as if a gunner fired a shell at a single…

It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.

Radioactivity is shown to be accompanied by chemical changes in which new types of matter are being continually produced. … The conclusion is drawn that these chemical changes must be sub-atomic in character.

The ability to imagine relations is one of the most indispensable conditions of all precise thinking. No subject can be named, in the investigation of which it is not imperatively needed; but it can nowhere else be so thoroughly acquired …

In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs. Not the man who finds a grain of new and precious quality but to him who sows it, reaps it, grinds it and feeds the world on it.

The love of experiment was very strong in him, and I can remember the way he would say, "I shan't be easy till I have tried it," as if an outside force were driving him. He enjoyed experimenting much more than work which only entailed …

[E]very thing which partakes of Sense, has also Reason; 'tis the Mind alone that sees, hears, &c. the Body of itself being blind, deaf, and void of all Sense. Therefore since Beasts see and hear, and perform all other Actions of Sense as …