It is the weight, not numbers of experiments that is to be regarded.
Plato is my friend, Aristotle is my friend, but my greatest friend is truth.
You sometimes speak of gravity as essential and inherent to matter. Pray do not ascribe that notion to me, for the cause of gravity is what I do not pretend to know, and therefore would take more time to consider of it.
To explain all nature is too difficult a task for any one man or even for any one age
Oh Diamond! Diamond! thou little knowest the mischief done! [Apocryphal]
No great discovery was ever made without a bold guess.