“In order to be able to deceive intentionally, an animal must have a sense of how its actions appear to another individual. Such an ability requires self-awareness.”
The Origin of Humankind (1994)
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Richard Leakey 39
Kenyan paleoanthropologist, conservationist, and politician 1944Related quotes

“The able have no desire to appear to be so, and this is part of their ability.”
Source: Aphorisms and Reflections (1901), p. 146

Daniel Goleman (1995) cited in: John O. Dozier (2010) The Weeping, the Window, the Way. p. 130

Il faut se défaire de la partialité du moi individuel et passionné pour se hausser à l’universalité du moi rationnel.
La Philosophie comme manière de vivre (2001)
Education helps reduce social problems and improves quality of life

Source: The Living Brain (1953), p. 120–121.
Conclusion, p. 415
The Evolution of Civilizations (1961) (Second Edition 1979)

Six Principles of Political Realism, § 4.
Politics Among Nations (1948)
Context: Political realism is aware of the moral significance of political action. It is also aware of the ineluctable tension between the moral command and the requirements of successful political action. And it is unwilling to gloss over and obliterate that tension and thus to obfuscate both the moral and the political issue by making it appear as though the stark facts of politics were morally more satisfying than they actually are, and the moral law less exacting than it actually is.