This means that we have here an entirely separate kind of chemistry for which the current tool we use is the electrometer, not the balance, and which we might well call the chemistry of the imponderable.

I was taught that the way of progress was neither swift nor easy.

We must not forget that when radium was discovered no one knew that it would prove useful in hospitals.

When one studies strongly radioactive substances special precautions must be taken. Dust, the air of the room, and one's clothes, all become radioactive.

If it takes a hundred years, it will be a pity, but I will not cease to work for it as long as I live.

We believe the substance we have extracted from pitchblende contains a metal not yet observed, related to bismuth by its analytical properties. If the existence of this new metal is confirmed we propose to call it polonium, from the name of the original country of one of us.

Scientist believe in things, not in person