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

Morals — all correct moral laws — derive from the instinct to survive. Moral behavior is survival behavior above the individual level.
All that is required for evil to prevail is for good men to do nothing.
Albert Einstein1879–1955Religion and Science (1930)