OF THE INWARD LIFE
“The kingdom of God is within you, says the Lord. Turn you with all your heart to the Lord and forsake this miserable world, and you shall find rest unto your soul. Learn to despise outward things and to give yourself to things inward, and you shall see the Kingdom of God come within you. For the kingdom of God is peace and joy in the Holy Ghost, and it is not given to the wicked. Christ will come to you, and show you His consolation, if you prepare a worthy mansion for Him within you. All His glory and beauty are from within, and there it pleases Him to dwell. He often visits the inward man and holds with him sweet discourse, giving him soothing consolation, much peace, friendship exceeding wonderful.
Go to, faithful soul, prepare your heart for this bridegroom that he may vouchsafe to come to you and dwell within you, for so He says, if any man loves me, he will keep my words: and my Father will love him, and we will come unto him and make our abode with him. Give therefore, place to Christ and refuse entrance to all others. When you have Christ, you are rich, and have sufficient. He shall be your provider and faithful watchman in all things, so that you have no need to trust in men, for men soon change and swiftly pass away, but Christ remains forever and stands by us firmly, even to the end.
There is no great trust to be placed in a frail and mortal man, even though he be useful and dear to us, neither should much sorrow arise within us if sometimes he opposes and contradict us. They who are on your side today, may tomorrow be against you, and often are they turned round like the wind. Put your whole trust in God and let Him be your fear and your love, He will answer for you Himself, and will do for you what is best. Here, have you no continuing city, and wheresoever you are, you are a stranger and a pilgrim, and you shall never have rest, unless you are closely united to Christ within you.”
Thomas a Kempis
The Mark Of God: Understanding Your "I AM Presence" 