“The key then to attaining this higher level of intelligence is to make our years of study qualitatively rich. We don't simply absorb information - we internalize it and make it our own by finding some way to put this knowledge to practical use.”

Source: Peace Pilgrim: Her Life and Work in Her Own Words (1982), Ch. 3 : The Pilgrimage
Context: Please don't say lightly that these are just religious concepts and not practical. These are laws governing human conduct, which apply as rigidly as the law of gravity. When we disregard these laws in any walk of life, chaos results. Through obedience to these laws this world of ours will enter a period of peace and richness of life beyond our fondest dreams.
The key word for our time is practice. We have all the light we need, we just need to put it into practice.

2010s, 2016, Letter to America's Enemies (2016)

Source: Information, The New Language of Science (2003), Chapter 24, Bits, Bucks, Hits and Nuts, Information theory beyond Shannon, p. 221

1910s, Nobel lecture (1910)
Context: Moreover, and above all, let us remember that words count only when they give expression to deeds, or are to be translated into them. The leaders of the Red Terror prattled of peace while they steeped their hands in the blood of the innocent; and many a tyrant has called it peace when he has scourged honest protest into silence. Our words must be judged by our deeds; and in striving for a lofty ideal we must use practical methods; and if we cannot attain all at one leap, we must advance towards it step by step, reasonably content so long as we do actually make some progress in the right direction.

Source: The Aquarian Conspiracy (1980), Chapter Nine, Flying and Seeing: New Ways to Learn, p. 279

Great Jewish Short Stories, introduction to the Dell paperback edition (1963)
General sources
Context: We are all such accidents. We do not make up history and culture. We simply appear, not by our own choice. We make what we can of our condition with the means available. We must accept the mixture as we find it — the impurity of it, the tragedy of it, the hope of it.

Quotations from Gurudev’s teachings, Chinmya Mission Chicago

to prove he had WMD
from Ron Suskind, The Way of the World, p. 364 https://books.google.ca/books?id=AhVMo1UTXbcC&q=%22can+use%22#v=snippet&q=%22can%20use%22, on Bush's frustration at the results of secret meetings between British intelligence and Saddam's intelligence chief, Tahir Jalil Habbush (early January 2003)
2000s, 2003

Please Use Your Liberty to Promote Ours (1997)