„They must often change who would remain constant in happiness and wisdom.“

— Confucius

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„Insistence on the postulate of complete logical clarification would make science impossible. We are reminded… of the old wisdom that one who insists on never uttering an error must remain silent.“
— Werner Heisenberg
„Change is a funny thing. We never are quite sure what we are becoming or even why. Then one day we look at ourselves and wonder who we are and how we got that way. Only one thing about change remains constant… it is always painful“
— Jodi Picoult