This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...njure them, no warning signals, and thus a minor cut can develop into a deadly infection, or a major illness can remain undetected until it is too late to fight it.
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�� for those living organisms which possess it — is the basic means of survival.
The simpler organisms, such as plants, can survive by means of their automatic physical functions
. The higher organisms, such as animals and man, cannot: their needs are more complex and the range of their actions is wider. The physical functions of their bodies can perform automatically on...