The only ethical principle which has made science possible is that the truth shall be told all the time. If we do not penalize false statements made in error, we open up the way for false statements by intention. And a false statement of fact, made deliberately, is the most serious crime a scientist can commit.
To make a deliberate falsification for personal gain is the last, worst depth to which either scholar or artist can descend in work or life. (Letter to Muriel St. Clare Byrne, 8 September 1935)
See that the mind is honest, first; the rest may follow or not as God wills. [That] the fundamental treason to the mind ... is the one fundamental treason which the scholar's mind must not allow is the bond uniting all the Oxford people in the last resort.
Heroes and scholars represent the opposite extremes... The scholar struggles for the benefit of all humanity, sometimes to reduce physical effort, sometimes to reduce pain, and sometimes to postpone death, or at least render it more bearable. In contrast, the patriot sacrifices a rather substantial part of humanity for the sake of his own prestige. His statue is always erected on a pedestal of ruins and corpses... In contrast, all humanity crowns a scholar, love forms the pedestal of his statues, and his triumphs defy the desecration of time and the judgment of history.
The most intriguing people you will encounter in this life are the people who had insights about you, that you didn't know about yourself.