Science does not permit exceptions. – Claude Bernard
It is what we know already that often prevents us from learning. – Claude Bernard

Science does not permit exceptions. – Claude Bernard
It is what we know already that often prevents us from learning. – Claude Bernard
Observation is a passive science, experimentation an active science. – Claude Bernard
A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes. – Claude Bernard
One of the first laws against air pollution came in 1300 when King Edward I decreed the death penalty for burning of coal. At least one execution for that offense is recorded. But economics triumphed over health considerations, and air pollution became an appalling problem in England. – Glenn T. Seaborg, Atomic Energy Commission chairman, speech, Argonne National La