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The deepest principle in human nature is the craving to be appreciated.
All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.
In things indifferent， nothing is preferable to anything else.
Nothing is certain， and nothing is impossible.
Everything flows, everything changes, nothing remains.
There is no more intrepid a voyager than the philosopher.
A mind free from cares and fears is needed to experience true happiness.
A life without festivity is a long road without an inn.
In language， there is no one-to-one correspondence between words and the things they refer to.
