Dmitri Mendeleev

There is nothing in this world that I fear to say.

The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.

There exists everywhere a medium in things, determined by equilibrium.

Climate change is analogous to Lincoln and slavery or Churchill and Nazism: it's not the kind of thing where you can compromise.

I watch people throw aluminum cans in the trash, and I think of all the stories I've heard about the over-mining of aluminum, the erosion that happens, and the trees that fall down.

Most technological advances in our life now come from serendipitous discoveries. That is a contraction of rocket technology and computer technology and atomic clock technology.