Observation Wheel

Famous quotes containing the words observation and/or wheel:

“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)

“But if you know that you are a man too, and that even such are those that rule, learn this first of all: that all human affairs are a wheel which, as it turns, does not allow the same men always to be fortunate.”
—Herodotus (c. 484–424 B.C.)