“This is the greatest discovery of the scientific enterprise: You take hydrogen gas, and you leave it alone, and it turns into rosebushes, giraffes, and humans.”

in his Nobel lecture http://nobelprize.org/nobel_prizes/chemistry/laureates/1987/pedersen-lecture.html, December 8, 1987.

David Zellaby (Martin Stephens), Village of the Damned (speaking to his uncle about himself and the other alien children) (1960).

Source: Lock and Key

Poem In the theatre, in: Dannie Abse (1997) Welsh retrospective, p. 43

"Man alone, of all creatures of earth, can change his thought pattern and become the architect of his destiny." Actually said by Spencer W. Kimball, twelfth president of The Church of Jesus Christ of Latter-day Saints, in his Miracle of Forgiveness (1969), p. 114. This predates any of the misquotations.
Other forms: "The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind." This is also misattributed to Albert Schweitzer.
James did say: "As life goes on, there is a constant change of our interests, and a consequent change of place in our systems of ideas, from more central to more peripheral, and from more peripheral to more central parts of consciousness."
Misattributed

Source: Pygmalion

"O'Reilly Open Source Conference: Day 3" by Paul Weinstein, in Apache Week (26 July 2002) http://www.apacheweek.com/features/oscon2002
2000s