“Human beings are endowed by nature with both selfish and unselfish impulses.”

As quoted in Eihei Dogen, Mystical Realist (2004) by Hee-jin Kim

Genesis I, 26 (p. 5)
The Pentateuch and Haftorahs (one-volume edition, 1937, ISBN 0-900689-21-8

Source: (1932), p.29

Genius
One Minute Wisdom (1989)
Context: A writer arrived at the monastery to write a book about the Master.
"People say you are a genius. Are you?" he asked.
"You might say so." said the Master, none too modestly.
"And what makes one a genius?" "The ability to recognize." "Recognize what?"
"The butterfly in a caterpillar: the eagle in an egg; the saint in a selfish human being."

"Our Inner Ape: A Leading Primatologist Explains Why We Are Who We Are" (2005), p. 243
Context: In 1879, American economist Francis Walker tried to explain why members of his profession were in such "bad odor amongst real people". He blamed it on their inability to understand why human behavior fails to comply with economic theory. We do not always act the way economists think we should, mainly because we're both less selfish and less rational than economists think we are. Economists are being indoctrinated into a cardboard version of human nature, which they hold true to such a degree that their own behavior has begun to resemble it. Psychological tests have shown that economics majors are more egoistic than the average college student. Exposure in class after class to the capitalist self-interest model apparently kills off whatever prosocial tendencies these students have to begin with. They give up trusting others, and conversely others give up trusting them. Hence the bad odor.

Source: Man, the State, and War (1959), Chapter II, The First Image, p. 16

Pt. II, ch. 3
Under Western Eyes (1911)

Source: Real Christianity

1990s, Nobel Prize acceptance speech (1993)
Context: I am also here today as a representative of the millions of people across the globe, the anti-apartheid movement, the governments and organisations that joined with us, not to fight against South Africa as a country or any of its peoples, but to oppose an inhuman system and sue for a speedy end to the apartheid crime against humanity.
These countless human beings, both inside and outside our country, had the nobility of spirit to stand in the path of tyranny and injustice, without seeking selfish gain. They recognised that an injury to one is an injury to all and therefore acted together in defense of justice and a common human decency.