Okay - here's my thing. I have about 60 Spanish flashcards that I carry around with me. To those I've added important information that I want to learn (student bus numbers, school phone numbers, other phone numbers that I want to know more of besides "speed dial 2".

To those I had started to add the Westminster Shorter Catechism, but after only a couple of questions decided to go with the Larger. I'm also using the ESV
Q. 1. What is the chief and highest end of man?

A. Man's chief and highest end is to glorify God (1), and fully to enjoy Him forever(2).

(1)...to glorify God

• Roman 11:36 For of Him and through Him, and to Him, are all things; to whom be glory for ever. Amen.
• 1 Corinthians 10:31 So whether you eat or drink, or whatever you do, do all to the glory of God.

(2)---and fully to enjoy Him forever.

• Psalm 73:24-28 (this is not going to go on a business card - I don't usually memorize with verse numbers within the text, but I'm leaving them in here so I can use more than one card...)
• 24 You guide me with your counsel,
  and afterward you will receive me to glory.
  25 Whom have I in heaven but you?
  And there is nothing on earth that I desire besides you.
  26My flesh and my heart may fail,
  but God is the strength of my heart and my portion forever.²⁷
  you put an end to everyone who is unfaithful to you.
  28But for me it is good to be near God;
  I have made the Lord GOD my refuge,
  that I may tell of all your works.
• John 17:21-23that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us, so that the world may believe that you have sent me. The glory that you have given me I have given to them, that they may be one even as we are one, I in them and you in me, that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me.