The Pilgrim's Progress from this world to that which is to come, delivered under the similitude of a dream

by John Bunyan

so far as I can see, it is dangerous going down. Yes, said Prudence, so it is, for it is a hard matter for a man to go down into the Valley of Humiliation, as thou art now, and to catch no slip by the way; therefore, said they, are we come out to accompany thee down the hill. So he began to go down, but very warily; yet he caught a slip or two.