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"Every book is a conversation between the writer and the reader."

The past is a foreign country; they do things differently there.

The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.

哲學的本質不是擁有真理，而是尋找真理。

什么也不做是世上最難的事情，最困難并且最智慧。