Saint Teresa of Ávila
"Let nothing disturb you. Let nothing dismay you.
All things pass. God never changes. Patience attains
all that it strives for. He who has God
finds he lacks nothing. God alone suffices."
"The evil spirits keep us in terror, because we expose ourselves to the assaults of terror by our attachments to honours, possessions, and pleasures. For then the evil spirits, uniting themselves with us, — we become our own enemies when we love and seek what we ought to hate, — do us great harm. We ourselves put weapons into their hands, that they may assail us; those very weapons with which we should defend ourselves. It is a great pity. But if, for the love of God, we hated all this, and embraced the cross, and set about His service in earnest, Satan would fly away before such realities, as from the plague."
"The surest way to determine whether one possesses the love of God is to see whether he or she loves his or her neighbor. These two loves are never separated. Rest assured, the more you progress in love of neighbor the more your love of God will increase.