Famous quotes containing the words vice and/or principal:
“No Vice or Wickedness, which People fall into from Indulgence to Desires which are natural to all, ought to place them below the Compassion of the virtuous Part of the World; which indeed often makes me a little apt to suspect the Sincerity of their Virtue, who are too warmly provoked at other Peoples personal Sins.”
—Richard Steele (1672–1729)
“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)