“Always remember that the Universe will never take anything away from you without the intention of replacing it with something better.”

Source: A Searching Heart

Source: The Real Frank Zappa Book

On drug dealing, quoted in The Daily Telegraph (1964)

Just Say No (1986)
Context: Drugs steal away so much. They take and take, until finally every time a drug goes into a child, something else is forced out — like love and hope and trust and confidence. Drugs take away the dream from every child's heart and replace it with a nightmare, and it's time we in America stand up and replace those dreams. Each of us has to put our principles and consciences on the line, whether in social settings or in the workplace, to set forth solid standards and stick to them. There's no moral middle ground. Indifference is not an option. We want you to help us create an outspoken intolerance for drug use. For the sake of our children, I implore each of you to be unyielding and inflexible in your opposition to drugs.

Variant: If you’re always on time, it implies that you never have anything better you should be doing.
Source: Mistborn: The Final Empire