Das Lichtmikroskop öffnete das erste Tor zum Mikrokosmos. Das Elektronenmikroskop öffnete das zweite Tor zum Mikrokosmos. Was werden wir finden wenn wir das dritte Tor öffnen?
as quoted by Nan Yao, director of the Imaging and Analysis Center at the Princeton Materials Institute, in the Princeton Weekly Bulletin, February 26, 2001, Vol. 90, No. 18 http://www.princeton.edu/~iac/pwb2_26b.html.
“Fire opens the gates of victory.”
From "The Science of Victory," 1796, quoted in Bragin "Field Marshal Kutuzov," 1944.
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Alexander Suvorov 24
Russian military commander 1730–1800Related quotes

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"Although innumerable beings have been led to Nirvana no being has been led to Nirvana", §5, p. 85
Knots (1970)

Excerpt from a sermon on Easter delivered by Mendel, found in Folia Mendeliana (1966), Volume 1-6, Moravian Museum in Brünn.
Sermon on Easter
Original: Der Sieg Christi hat uns das Reich der Gnade gewonnen, das Himmelreich. Osterfahne wird zur Himmelsfahne, zur Flagge der Ewigkeit, die siegreich weht über den Toren der Heiligen Stadt Jerusalem

speaking about Winston Churchill at the Reichstag, 4 May 1941 http://humanitas-international.org/showcase/chronography/speeches/1941-05-04.html.
1940s

“Civilizations fall because the people inside the Sanctuary throw open the gates.”
SANCTUARY (part 1) https://web.archive.org/web/20050521031500/http://ejectejecteject.com/archives/000125.html (18 May 2005)
2000s