It is not a matter of thinking a great deal but of loving a great deal, so do whatever arouses you most to love.
Teresa of AvilaTo reach something good it is very useful to have gone astray, and thus acquire experience.
Teresa of AvilaI once heard a spiritual man say that he was not so much astonished at the things done by a soul in mortal sin as at the things not done by it. May God, in his mercy, deliver us from such great evil, for there is nothing in the whole of our lives that so thoroughly deserves to be called evil as this, since it brings endless and eternal evils in its train.
Teresa of Avila