When I start a new seminar I tell my students that I will undoubtedly contradict myself, and that I will mean both things. But an acceptance of contradiction is no excuse for fuzzy thinking. We do have to use our minds as far as they will take us, yet acknowledge that they cannot take us all the way.
Quiet moments bring you closer to God. It's your silent time within your own private sanctuary. People have so many things to talk about, worry about, think about, without giving themselves peace within. Quiet moments give you access to areas of your brain which allows you to function proficiently.