Principal

Famous quotes containing the word principal:

“The principal point of cleverness is to know how to value things just as they deserve.”
—François, Duc De La Rochefoucauld (1613–1680)

“All animals, except man, know that the principal business of life is to enjoy it.”
—Samuel Butler (1835–1902)

“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)