Mental prayer in my opinion is nothing else than an intimate sharing between friends; it means taking time frequently to be alone with Him who we know loves us. The important thing is not to think much but to love much and so do that which best stirs you to love. Love is not great delight but desire to please God in everything.
Teresa of AvilaThe more we see that any action springs not from the motive of obedience, the more evident is it that it is a temptation of the enemy; for when God sends an inspiration, the very first effect of it is to infuse a spirit of docility.
Teresa of AvilaWhat friends or kindred can be so close and intimate as the powers of our soul, which, whether we will or no, must ever bear us company?
Teresa of AvilaLet him never cease from prayer who has once begun it, be his life ever so wicked; for prayer is the way to amend it, and without prayer such amendment will be much more difficult.
Teresa of AvilaHis Majesty knows best what is suitable for us. There's no need for us to be advising Him about what He should give us, for He can rightly tell us that we don't know what we're asking for (cf. Mt. 20:22). The whole aim of any person who is beginning prayer ? and don't forget this, because it's very important ? should be that he work and prepare himself with determination and every possible effort to bring his will into conformity with God's will.
Teresa of Avila