Who said "Denial is the mind's first line of defense."?

This quote is attributed to Sigmund Freud.

Denial is the mind's first line of defense. - Sigmund Freud

"Denial is the mind's first line of defense."

Sigmund Freud

Psychologist and Psychiatrist Austro-Hungarian 1856–1939

"The only way out is through."

"Being entirely honest with oneself is a good exercise."

"We are never so defenseless against suffering as when we love."

"Dreams are the royal road to the unconscious."