My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall we laugh, or shall we cry?

In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.

Names and attributes must be accommodated to the essence of things, and not the essence to the names, since things come first and names afterwards.

If you could see the earth illuminated when you were in a place as dark as night, it would look to you more splendid than the moon.

I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses;' for whatever is not deduced from the phen…

[H]istorical science is not worse, more restricted, or less capable of achieving firm conclusions because experiment, prediction, and subsumption under invaria…

'Have the climate models been successful in predicting anything? They, of course, predict substantial global warming. This is not surprising given the expresse…