„I’m an old, superstitious Arab, and I believe in our proverbs. There’s one that says, ‘Everything that happens once can never happen again. But anything that happens twice will surely happen a third time.“

— Paulo Coelho

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„Everything that happens once can never happen again. But everything that happens twice will surely happen a third time.“
— Paulo Coelho
„while the scientist sees everything that happens in one point of space,the poet feels everything that happens in one point of time.“
— Vladimir Nabokov
„Time is nature's way of keeping everything from happening at once.“
— Albert Einstein
„In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.“
— Carl Sagan
„What will happen will happen and I won't waste my time worrying.“
— Christopher Paolini