#certainty

There should be a word for the microscopic spark of hope that you dare not entertain in case the mere act of acknowledging it will cause it to vanish, like trying to look at a photon.

It's by delaying his conclusions, even when they seem to him evident, that a philosopher progresses.

The “well-informed” think they know something about matters that the experts are reluctant even to speak of. Information at second hand always gives an impression of tidiness, in contrast with the data at the scientist’s disposal, full of gaps and uncertainties.