" He made the arrangements, the summer passed, and he went to Berlin to study. When he returned at the end of his year, he brought back a new blend: the methods of German phenomenology, mixed with ideas from the earlier Danish philosopher Søren Kierkegaard and others, set off with the distinctively French seasoning of his own literary sensibility. He applied phenomenology to people’s lives in a more exciting, personal way than its inventors had ever thought to do, and thus made himself the founding father of a philosophy that became international in impact, but remained Parisian in flavour: modern existentialism. The "

― Sarah Bakewell , At the Existentialist Café: Freedom, Being, and Apricot Cocktails