Robert A. Heinlein
A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.
More quotes and aphorisms
In the 20th century, the United States endured...That which is false troubles the heart...My life motto...If you don't drive your business, you will be driven...We were all at once terribly alone...Life without liberty is like a body without spirit...
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