Facts are not science - as the dictionary is not literature.

Don't confuse hypothesis and theory. The former is a possible explanation; the latter, the correct one. The establishment of theory is the very purpose of science.

Half of the modern drugs could well be thrown out of the window, except that the birds might eat them.

To provoke dreams of terror in the slumber of prosperity has become the moral duty of literature.

For every fact there is an infinity of hypotheses.

The most important fundamental laws and facts of physical science have all been discovered, and these are now so firmly established that the possibility of their ever being supplemented by new discoveries is exceedingly remote.