African Spir (1837–1890) Russian philosopher
Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 58.
Source: Talks on Pedagogics, (1894), p. 25; as quoted in Sanderson Beck. Francis W. Parker's Concentration Pedagogy: Education to Free the Human Spirit http://www.san.beck.org/Parker.html, 1996
African Spir (1837–1890) Russian philosopher
Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 58.
John F. Kennedy (1917–1963) 35th president of the United States of America
1961, Address at the University of Washington
“self-development is a higher duty than self-sacrifice.”
Elizabeth Cady Stanton (1815–1902) Suffragist and Women's Rights activist
Zisi (-481–-402 BC) Chinese philosopher
Variant translation: "Before joy, anger, sadness and happiness are expressed, they are called the inner self; when they are expressed to the proper degree, they are called harmony. The inner self is the correct foundation of the world, and harmony is the illustrious Way. When a man has achieved the inner self and harmony, the heaven and earth are orderly and the myriad things are nourished and grow thereby."
As translated by Lin Yutang in The Importance of Living (1937), pp. 143–144
Source: The Doctrine of the Mean, p. 104
Francis Escudero (1969) Filipino politician
2009, Speech: The Socio-Economic Peace Program of Senator Francis Escudero
Kenneth E. Boulding (1910–1993) British-American economist
Source: 1940s, Economic Analysis, 1941, p. 613 (rev. ed. 1948) as cited in: Andrew McMeekin (2002) Innovation by Demand. p. 131
“Self-preservation is the central aim of all life-activities.”
Boris Sidis (1867–1923) American psychiatrist
Source: Nervous Ills their Cause and Cure (1922), p. 20
Idries Shah book Learning How to Learn: Psychology and Spirituality in the Sufi Way
Source: Learning How to Learn: Psychology and Spirituality in the Sufi Way