The experiment is the most powerful and most reliable lever enabling us to extract secrets from nature… The experiment must constitute the final judgment as to whether a hypothesis should be retained or be discarded.
Wilhelm Conrad Röntgen, Würzburg, 1894
As I see it, however, the medical profession has the responsibility not only for the cure of the sick and for the prevention of disease but for the advancement of knowledge upon which both depend. This third responsibility can only be met by investigation and experiment….1
R.A. McCance, Cambridge, 1950
To do nothing is also a good remedy
Hippocrates, Greece, c.460-c.400 BC
Hippocrates is particularly right if there are solid pieces of evidence that 'to do nothing' is the best and the most effective option of them all