Philanthropist Robert J. Hildreth, vice-chair of Boston University’s Board of Overseers, has donated $2 million to Creative Writing Programs at the College of Arts & Sciences, and challenged alumni to raise an additional $1 million, announced Robert A. Brown, BU president. The $2-million base donation will equally fund the Leslie Epstein International Visiting Professorship in Creative Writing, and the Robert Pinsky Global Fellowship Fund in Creative Writing, with the express goals of honoring the respective BU professors and fostering the creative development of student writers. The $1-million Visiting Professorship is a challenge grant designed to motivate supplementary gifts that match or exceed the initial contribution.