More from Robert A. Heinlein
More about morality
All that is required for evil to prevail is for good men to do nothing.
Albert Einstein1879–1955Religion and Science (1930)
People/Robert A. Heinlein/Quote

Selfishness is the bedrock on which all moral behavior starts and it can be immoral only when it conflicts with a higher moral imperative.
The Pragmatics of Patriotism (1973)
Quote and source from Wikiquote, CC BY-SA 4.0
All that is required for evil to prevail is for good men to do nothing.
Albert Einstein1879–1955Religion and Science (1930)