The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.

Both the man of science and the man of action live always at the edge of mystery, surrounded by it.

The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.

You can certainly destroy enough of humanity so that only the greatest act of faith can persuade you that what's left will be human.

Both the man of science and the man of art live always at the edge of mystery, surrounded by it. Both, as a measure of their creation, have always had to do with the harmonization of what is new with what is familiar, with the balance between novelty and synthesis, with the struggle to make partial order in total chaos.... This cannot be an easy life.

There are children playing in the streets who could solve some of my top problems in physics, because they have modes of sensory perception that I lost long ago.

Now I am become death, the destroyer of worlds. (quoting the Bhagavad-Gita after witnessing the first Nuclear explosion.)