Beware of assumptions that seem obvious in one decade. They may become quaint in the next.


Afterword (p. 661) - Earth (1990)


Beware of assumptions that seem obvious in one decade. They may become quaint in the next.

Beware of assumptions that seem obvious in one decade. They may become quaint in the next.

Beware of assumptions that seem obvious in one decade. They may become quaint in the next.

Beware of assumptions that seem obvious in one decade. They may become quaint in the next.