Ever since, I've found that this choice to come aboard the ark is just about the best thing I ever did. I've ever since thought of it as my main vocation, to build bridges between Catholics and non-Catholics. I was a signer of the Evangelicals and Catholics Together statement, and support that very strongly. I love somebody like C. S. Lewis whom almost all evangelical Protestants love, and almost all faithful Roman Catholics love. St. Augustine's another one; Catholics and Protestants both love him.
Source: Peter Kreeft - Conversion to Catholicism, Catholic Education Resource Center, http://www.catholiceducation.org/en/religion-and-philosophy/apologetics/dr-peter-kreeft-s-conversion-to-catholicism-part-2.html