This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...animals. But just as animals would not be able to survive by attempting the method of plants, by rejecting locomotion and waiting for the soil to feed them — so men cannot survive by attemptin g the method of animals, by rejecting reason and counting on productive men to serve as their prey. Such looters may achieve their goals for the range of a moment, at the price of destruction: t he destruc- tion of their victims and their own. As evidence, I offer you any criminal or any dictatorship.

Man cannot survive, like an animal, by acting on the range of the moment...
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