There are three principal means of acquiring knowledge. . . observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination. - Denis Diderot
Fiction is experimentation; when it ceases to be that, it ceases to be fiction. - John Cheever
The affection of parents makes infants feel safe in this dangerous world, and gives them boldness in experimentation and in exploration of their environments. - Bertrand Russell
We must conduct research and then accept the results. If they don't stand up to experimentation, Buddha's own words must be rejected. - Dalai Lama XIV
No amount of experimentation can ever prove me right; a single experiment can prove me wrong. - Albert Einstein