"Einstein's E=mc2 is an extraordinary concept. So radical: matter and energy are two phases of the same sort of general stuff. There's only one other idea that radical: Forgive us our trespasses as we forgive those who trespass against us."

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When a concept has been understood intellectually, if the learning is to be of value then a connection with personal feelings, inner knowing and experience has to be made, and consideration of how the information would best be applied.

— Peter Shepherd