Adult neurogenesis is mediated by immature neural precursors that divide within the residual germinal matrices of the brain. In the paper by in this issue of Neuron, the "cause and effect" of adult neurogenesis takes a major step forward with the description of a vascular signaling network that influences neuronal precursor migration and fate.

About the author. . . . Friedrich Nietzsche’s (1844-1900) intuitive and visceral rejection of the economics, politics, and science of European civilization in the 19th century led him to predict, “There will be wars such as there have never been on earth before.” His dominant aphoristic style of writing and his insistence of truth as convenient fiction, or irrefutable error, have puzzled philos...

The New Oxford Dictionary of English includes an acceptation of the adjective “agonistic” that makes it appropriate to describe the conception of education in Nietzsche ́s writings from the so called “period of youth” or “first period”, that is, the period which ended in 1876 with the publication of the fourth and last untimely meditation, entitled Richard Wagner in Bayreuth. This acceptation, w...