This is my favorite precept from The Way to Happiness by L. Ron Hubbard:

7. Seek to live with the truth.

False data can cause one to make stupid mistakes. It can even block one from absorbing true data.

One can solve the problems of existence only when he has true data...

...What is true is what is true for you.

No one has any right to force data on you and command you to believe it or self. If it i snot true for you, it isn't true...

I love the entire chapter. It really applies to life every single day -- what is true, how to determine the truth, how to face the truth and know what you know without seeking other people's answers.

It also has a great deal to do with personal integrity.

To read more, go to: The Way to Happiness.