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Robert A. Heinlein Quotes about Love

Love is that condition in which the happiness of another person is essential to your own.

Robert A. Heinlein (1987). “Stranger in a Strange Land”, p.340, Penguin

May you live as long as you wish and love as long as you live.

Robert A. Heinlein (1987). “Time Enough for Love”, p.87, Penguin

A zygote is a gamete's way of producing more gametes. This may be the purpose of the universe.

Robert A. Heinlein (1987). “Time Enough for Love”, p.229, Penguin

Work is not an end in itself; there must always be time enough for love.

Robert A. Heinlein (1987). “Time Enough for Love”, p.201, Penguin