“I have after years of thinking on the subject come to the conviction that work is the only instrument of effective education. It may sometimes be manual work and sometimes non-manual work. Although it is work alone that can educate, I have also come to the conviction by long observation and experience that all work does not educate.”

Jacob Leupold, quoted in: Biography of Jacob Leupold (1674–1727) http://history-computer.com/People/LeupoldBio.html on history-computer.com, 2013

60
Wonderful, Wonderful Times (1990)

C QA Community Event with Bjarne Stroustrup, 2014-08-27 https://www.youtube.com/watch?v=jDqQudbtuqo,

Young India (8 October 1924). Quoted in Teachings of Mahatma Gandhi (1945), edited by Jag Parvesh Chander, Indian Printing Works, page 242 http://archive.org/stream/teachingsofmahat029222mbp#page/n247.
1920s

Source: Aphorisms and Reflections (1901), p. 116

But the moment they are out the door I start working on it. I rework it.
In a talk with Kosinski, before 'Per Kirkeby at the Phillips', in The Phillips Collection, Washington D.C. January, 2013
Kirkeby spoke to exhibition co-curator Dorothy Kosinski about the necessity of time in the development of a painting.
1995 and later

The Uttarpara Address (1909)
Context: The second message came and it said, "Something has been shown to you in this year of seclusion, something about which you had your doubts and it is the truth of the Hindu religion. It is this religion that I am raising up before the world, it is this that I have perfected and developed through the Rishis, saints and Avatars, and now it is going forth to do my work among the nations. I am raising up this nation to send forth my word. This is the Sanatan Dharma, this is the eternal religion which you did not really know before, but which I have now revealed to you. The agnostic and the sceptic in you have been answered, for I have given you proofs within and without you, physical and subjective, which have satisfied you. When you go forth, speak to your nation always this word, that it is for the Sanatan Dharma that they arise, it is for the world and not for themselves that they arise. I am giving them freedom for the service of the world. When therefore it is said that India shall rise, it is the Sanatan Dharma that shall be great. When it is said that India shall expand and extend herself, it is the Sanatan Dharma that shall expand and extend itself over the world. It is for the Dharma and by the Dharma that India exists. To magnify the religion means to magnify the country. I have shown you that I am everywhere and in all men and in all things, that I am in this movement and I am not only working in those who are striving for the country but I am working also in those who oppose them and stand in their path. I am working in everybody and whatever men may think or do, they can do nothing but help in my purpose. They also are doing my work, they are not my enemies but my instruments. In all your actions you are moving forward without knowing which way you move. You mean to do one thing and you do another. You aim at a result and your efforts subserve one that is different or contrary. It is Shakti that has gone forth and entered into the people. Since long ago I have been preparing this uprising and now the time has come and it is I who will lead it to its fulfilment."

Discourse no. 4; vol. 1, p. 94.
Discourses on Art