Famous quotes containing the words thought and/or experiments:
“We call a man a bigot or a slave of dogma because he is a thinker who has thought thoroughly and to a definite end.”
—Gilbert Keith Chesterton (1874–1936)
“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)