This volume centers on the exploration of the ways in which the canonical texts and thinkers of the phenomenological and existential tradition can be utilized to address contemporary, concrete philosophical issues.  In particular, the included essays address the key facets of the work of Charles Guignon, and as such, honor and extend his thought and approach to philosophy. To this end, the four main sections of the volume deal with the question of authenticity, i.e. what it means to be an authentic person, the ways in which the phenomenological and existential traditions can impact the sciences, how best to understand the fact of human mortality, and, finally, the ways philosophical reflection can help address current questions of value. The volume is designed primarily to serve as a secondary resource for students and specialists interested in rediscovering the practical application of existential and phenomenological thought. The collection of scholarly essays, then, could be used in conjunction with some of the more recent scholarship concerning the practical value of philosophy. Along with contributing to previous scholarship, the essays in this proposed volume attempt to update and expand the scope of phenomenological and existential inquiry. ?