When someone says „Scientists do not want you to know“ you can dismiss everything from there on. Scientists want you to know. They are desperate that you know. They can’t shut up about what they found out and want you to know.
If you have to speak publicly, even if it's just a brief toast at dinner, do NOT follow the stupid advice telling you to just wing it and "speak from the heart." That's a sure way to stumble or say something you'll regret. Always prepare your remarks and practice them.