Famous quotes containing the words thought and/or experiments:
“Spirit of Beauty, that dost consecrate
With thine own hues all thou dost shine upon
Of human thought or form,”
—Percy Bysshe Shelley (1792–1822)
“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.”
—Denis Diderot (1713–1784)