First fundamental value towards success

To achieve greater success in life, one of the fundamental values a person has to possess is:
"Integrity"
There was a quote saying (Mark Twain):
"To hide a lie, a thousand lies are needed. If you tell the truth, you don't have to remember anything."
What happens is that when a person lies, the other person listening to the story would 75% of the time be able to tell if that person is speaking the truth, through their facial expression, gesture, and speech and text regularity.
When a person is recognised in possessing strong moral values in handling every matter, trust can then be built, and that person will eventually become a trusted brand (to work with) to anyone.
And Oprah Winfrey once said: