„The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction.“

— Michael Faraday

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„The essence of all art is to have pleasure in giving pleasure.“
— Dale Carnegie
„People nowadays think that scientists exist to instruct them, poets, musicians, etc. to give them pleasure. The idea that these have something to teach them“
— Ludwig Wittgenstein
„Life is not primarily a quest for pleasure, as Freud believed, or a quest for power, as Alfred Adler taught, but a quest for meaning.“
— Viktor E. Frankl