Tim Keller understands one of the many reasons that we invest in college students:
If you’re on a college campus, you’re on the culture’s cutting edge. The campus is our best leadership development pipeline. By exposing people to the cutting edge of culture where they have to deal with the modern mindset, where they have to deal with non-Christians–that is the best way to develop pastors and lay leaders.
From this recent interview with Keller.
