Anxiety
The philosopher Søren Kierkegaard, in "The Concept of Anxiety" (1844), described anxiety or dread associated with the "dizziness of freedom" and suggested the possibility for positive resolution of anxiety through the self-conscious exercise of responsibility and choosing. In "Art and Artist" (1932), the psychologist Otto Rank wrote that the psychological trauma of birth was the pre-eminent human symbol of existential anxiety and encompasses the creative person's simultaneous fear of – and desire for – separation, individuation, and differentiation.
The Theory of Moral Sentiments
The Theory of Moral Sentiments is a 1759 book by Adam Smith. It provided the ethical, philosophical, psychological, and methodological underpinnings to Smith's later works, including "The Wealth of Nations" (1776), "Essays on Philosophical Subjects" (1795), and "Lectures on Justice, Police, Revenue, and Arms" (1763) (first published in 1896).