The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Isaac Asimov (1920 - 1992)
As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life - so I became a scientist. This is like becoming an archbishop so you can meet girls.
M. Cartmill
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
Sir William Bragg
The cloning of humans is on most of the lists of things to worry about from Science, along with behavior control, genetic engineering, transplanted heads, computer poetry and the unrestrained growth of plastic flowers.
Lewis Thomas (1913 - 1993)
All science is either physics or stamp collecting.
Ernest Rutherford (1871 - 1937), in J. B. Birks "Rutherford at Manchester" (1962)
There's two possible outcomes: if the result confirms the hypothesis, then you've made a discovery. If the result is contrary to the hypothesis, then you've made a discovery.
Enrico Fermi