“No matter how much we know in any area there are always new things to learn and things we have previously learned that we need to be refreshed in.”
Source: Battlefield of the Mind: Winning the Battle in Your Mind
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Joyce Meyer 128
American author and speaker 1943Related quotes

“For the things we have to learn before we can do, we learn by doing.”
Book II, 1103a.33: Cited in: Oxford Dictionary of Scientific Quotations (2005), 21:9
Nicomachean Ethics
Source: The Nicomachean Ethics

As quoted in his obituary, Daily Telegraph (4 November 2009) http://www.telegraph.co.uk/news/obituaries/science-obituaries/6496558/Claude-Levi-Strauss.html
Context: The idea behind structuralism is that there are things we may not know but we can learn how they are related to each other. This has been used by science since it existed and can be extended to a few other studies — linguistics and mythology — but certainly not to everything.
The great speculative structures are made to be broken. There is not one of them that can hope to last more than a few decades, or at most a century or two.
Language Education in a Knowledge Context (1980)

Love Over Scotland, chapter 112.
The 44 Scotland Street series

“I am learning that we still have things to learn.”
Source: The Number of the Beast (1980), Chapter XIV : “Quit worrying and enjoy the ride.”, p. 128

Source: Aphorisms and Reflections (1901), p. 160

The Day the Universe Changed (1985)