you don't see electrons, gravity, or black holes either
Source: Wonderful Life (1989), p. 279
“This process of self-discovery is scientific and the invariable rule of science has to be applied - experiment and observe. The experiment is to ask the question; the observation is to look at yourself and see what happens. Being a science the law cannot vary. Any apparent variation is in you: you will have stepped off the way of facts into conclusions. The sun is either shining or it is not. You do not have to conclude; you just look.”
Knowing Yourself: The True in the False (1996)
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Barry Long 86
Australian spiritual teacher and writer 1926–2003Related quotes

2010s
Source: Robert Krulwich. " Nature Has A Formula That Tells Us When It's Time To Die http://www.npr.org/blogs/krulwich/2013/01/22/169976655/nature-has-a-formula-that-tells-us-when-its-time-to-die," at npr.org, Jan. 22, 2013.
Kenneth Noland, p. 10
Conversation with Karen Wilkin' (1986-1988)

De Abaitua interview (1998)
Context: Mind has come up with this brilliant way of looking at the world — science — but it can’t look at itself. Science has no place for the mind. The whole of our science is based upon empirical, repeatable experiments. Whereas thought is not in that category, you can’t take thought into a laboratory. The essential fact of our existence, perhaps the only fact of our existence – our own thought and perception is ruled off-side by the science it has invented. Science looks at the universe, doesn’t see itself there, doesn’t see mind there, so you have a world in which mind has no place. We are still no nearer to coming to terms with the actual dynamics of what consciousness is.

same passage in transcript: video http://www.youtube.com/watch?v=-2NnquxdWFk&t=16m46s
The Character of Physical Law (1965)
Variant: In general we look for a new law by the following process. First we guess it. Then we compute the consequences of the guess to see what would be implied if this law that we guessed is right. Then we compare the result of the computation to nature, with experiment or experience, compare it directly with observation, to see if it works. If it disagrees with experiment it is wrong. In that simple statement is the key to science. It does not make any difference how beautiful your guess is. It does not make any difference how smart you are, who made the guess, or what his name is – if it disagrees with experiment it is wrong. That is all there is to it.
Knowing Yourself: The True in the False (1996)

in Charlie Rose Science Series: The Imperative of Science http://www.charlierose.com/view/interview/9027 with Paul Nurse, President of Rockefeller University, Harold Varmus, president of Memorial Sloan-Kettering Cancer Center, Shirley Ann Jackson, President of Rensselaer Polytechnic Institute, Bruce Alberts, Editor-In-Chief of Science and Lisa Randall of Harvard University.