Famous quotes containing the words primary and/or brain:
“A fact is a proposition of which the verification by an appeal to the primary sources of our knowledge or to experience is direct and simple. A theory, on the other hand, if true, has all the characteristics of a fact except that its verification is possible only by indirect, remote, and difficult means.”
—Chauncey Wright (1830–1875)
“...I never drink wine ... I keep my hands soft and supple ... I sleep in a soft bed and never over-tire my body. It is because when my hour strikes I must be a perfect instrument. My eyes must be steady, my brain clear, my nerves calm, my aim true. I must be prepared to do my work, successfully if God wills. But if I perish, I perish.”
—Lisa, Russian terrorist (anonymous)