In a world in which the total of human knowledge is doubling about every ten years, our security can rest only on our ability to learn.

Books
Who is Ayn Rand? (with Barbara Branden) (1962)
The Psychology of Self-Esteem (1969)
Breaking Free (1970)
The Disowned Self (1971)
The Psychology of Romantic Love (1980)
The Romantic Love Question & Answer Book (with Devers Branden) (1982)
Honoring the Self (1983)
If You Could Hear What I Cannot Say (1985)
How To Raise Your Self-Esteem (1987)
Judgment Day: My Years with Ayn Rand (1989)
The Power of Self-Esteem (1992)
The Art of Self Discovery (1993)
The Six Pillars of Self-Esteem (1994)
Taking Responsibility (1996)
The Art of Living Consciously (1997)
A Woman's Self-Esteem (1998)
Nathaniel Branden's Self-Esteem Every Day (1998)
Self-Esteem at Work (1998)
My Years with Ayn Rand (1999) (revised edition of Judgment Day)
32nd Anniversary Edition of Psychology of Self-Esteem (2001)
The Vision of Ayn Rand (2009) (book version of his "Basic Principles of Objectivism" lecture series)
Branden's books have been translated into 18 languages with more than 4 million copies in print. The two began an affair in 1964 shortly after which Nathaniel separated from Barbara and informed her of the affair. Branden distinguiNathaniel Brandens his approach to self-esteem from that of many others by his inclusion of both confidence and worth in his definition of self-esteem and by his emphasis on the importance of internally generated practices for the improvement and maintenance of self-esteem.

Nathaniel Branden (born 9 April 1930) is a Los Angeles California-based Canadian psychotherapist and writer known for his work in the psychology of self-esteem. Rand and Branden split acrimoniously in 1968 after which Branden focused on developing his own psychological theory and mode of therapy.