An open society such as ours is based on the recognition that our understanding of reality is inherently imperfect. Nobody is in possession of the ultimate truth. As the philosopher Karl Popper has shown, the ultimate truth is not attainable even in science. All theories are subject to testing and the process of replacing old theories with better ones never ends.

The nation is deeply divided and the two camps seem to be talking past each other. John Kerry won all three debates but President Bush invokes his faith and th…

Faith plays an important role in an open society. Exactly because our understanding is imperfect, we cannot base our decisions on knowledge alone. We need to r…

I have been crisscrossing the country for the last three weeks arguing against the reelection of President Bush. I feel strongly that he has led us in the wron…

The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifiability. We say that a sentence is factually signif…

Einstein's space is no closer to reality than Van Gogh's sky. The glory of science is not in a truth more absolute than the truth of Bach or Tolstoy, but in th…

Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.