Wow, Chapter 2 of The Cost Of Discipleship is solid stuff:

"You are trifling with the subject. If you believe, take the first step, it leads to Jesus Christ. If you don’t believe, take the first step all the same, for you are bidden to take it. No one wants to know about your faith or unbelief, your orders are to perform the act of obedience on the spot. Then you will find yourself in the situation where faith becomes possible and where faith exists in the true sense of the word."