Tell the truth. That way you don't have to remember a story.

When you tell the truth, you have nothing to keep track of. The world itself becomes your memory, and if questions arise, you can always point others back to it. You can even reconsider certain facts and honestly change your views. And you can openly discuss your confusion, conflicts, and doubts with all comers. A commitment to the truth is naturally purifying of error.

A good memory is needed after one has lied.

You don't have to explain something you haven't said.

let me reassure you with a very important fact: There’s no such thing as a good memory or a bad memory; there is only a trained memory and an untrained memory. If you have trouble remembering people’s names, making presentations without notes, or even finding your car keys in the morning, it’s extremely unlikely that this is because you’re incapable of doing these things. Instead, you just haven’t gotten the training.

A person who is fundamentally honest doesn't need a code of ethics. The Ten Commandments and the Sermon on the Mount are all the ethical code anybody needs.

Always tell the truth. It's the easiest thing to remember.

Tell the people the truth will set you free.

Say what you have to say, not what you ought. Any truth is better than make-believe.

You can be honest and kind, because your purpose in telling the truth is not to offend people.

Mucha gente confunde una mala memoria con una conciencia limpia

"When people say, 'You really, really must" do something, it means you don't really have to. [...] When it's true, it doesn't need to be said.

The truth is like a lion. You don't have to defend it. Let it loose. It will defend itself.

Never mind the truth. The past is what I say it is. That is the freedom of teaching the ignorant.