Denis Diderot Quote

There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination. Our observation of nature must be diligent, our reflection profound, and our experiments exact. We rarely see these three means combined; and for this reason, creative geniuses are not common.


No. 15 - On the Interpretation of Nature (1753)

Picture Quote 1

There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects...

Picture Quote 2

There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects...

Picture Quote 3

There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects...

Picture Quote 4

There are three principal means of acquiring knowledge available to us: observation of nature, reflection, and experimentation. Observation collects...