the imitation of Christ, the 3rd book: chapter xxvii (that personal love greatly hinders from the highest good)

THAT PERSONAL LOVE GREATLY HINDERS FROM THE HIGHEST GOOD “My Son, you must give all for all, and be nothing of your own. Know you that the love of yourself is more hurtful to you than anything in the world. According to the love and inclination which you have, everything more or less cleaves to [...]

the imitation of Christ, the 2nd book: chapter iv (a pure mind and simple intention)

OF A PURE MIND AND SIMPLE INTENTION “By two wings is man lifted above earthly things, even by simplicity and purity. Simplicity ought to be in the intention, purity in the affection. Simplicity reaches towards God, purity apprehends Him and tastes Him. No good action will be distasteful to you, if you be free within, [...]