The symbol is the tool which gives man his power, and it is the same tool whether the symbols are images or words, mathematical signs or s. - Jacob Bronowski

I have chosen to talk about one of the founder fathers of twentieth-century physics, Niels Bohr, because in both these respects he was a consummate artist. He had no ready-made answers. He used to begin his lecture courses by saying to his students, ‘Every sentence that I utter should be regarded by you not as an assertion but as a question’. What he questioned was the structure of the world. And the people that he worked with, when young and old (he was still penetrating in his seventies), were others who were taking the world to pieces, thinking it out, and putting it together.

Knowledge … is an unending adventure at the edge of uncertainty.

cultural evolution; once it takes off, it goes as the ratio of those two numbers goes, at least a hundred times faster than biological evolution.