Knowing how contented, free, and joyful is life in the world of science, one fervently wishes that many would enter its portals.

The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that.

Work, look for peace and calm in work: you will find it nowhere else.

I saw in a dream a table where all the elements fell into place as required. Awakening, I immediately wrote it down on a piece of paper.

Certain characteristic properties of elements can be foretold from their atomic weights.

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.

No one nor anything can silence me.

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

Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).

If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity.

Work, look for peace and calm in work: You will find it nowhere else. Pleasures flit by -- they are only for yourself; work leaves a mark of long-lasting joy, work is for others.

Who are you if nobody knows your story?

Evolution acts slowly. Our psychological characteristics today are those that promoted reproductive success in the ancestral environment.

They laughed at Joan of Arc, but she went right ahead and built it.

The best theatre I've done, I've done right here in this living room.

I'm sure my first nine years have had a powerful influence on the kind of books I write.

That religion and that nation will be blotted out of the face of the earth which pins its faith on injustice, untruth or violence.

The Mozilla Foundation is an independent, nonprofit organization.

You can use your life in a very useful and intelligent way. You can very well transform that negative energy into a positive energy that empowers you and makes life meaningful.

The youthful heart is ready to believe what it wishes will happen.

Life is a gift. Never take it for granted.