United Kingdom, April 7 -- Sarah Silverman was consciously "ignorant-arrogant" in the early years of her career.

The 54-year-old comedian feels she's learned some invaluable lessons from her past mistakes, which includes a comedy sketch when she performed in blackface.

Reflecting on her evolution, Sarah told the Guardian newspaper: "Some comics are like, 'Never apologise.' My rule is, 'Always apologise when you're sorry and never apologise when you're not.' It's so simple - I felt sorry."

Sarah feels proud that she's evolved and matured during her stand-up career.

She said: "I like being a part of the world around me, learning new stuff and being changed by it.

"Comics who are still doing that thing or voice or personality they had w...