The road into the Kingdom of Heaven was made by the Lord Jesus Christ, and He was the first one who traveled it. The Bible teaches that only he who follows Jesus can reach His Kingdom. But how can one follow Him? Hear what our Savior says about this: Whoever desires to come after Me, let him deny himself, and take up his cross, and follow Me (Mark 8:34). The words whoever desires mean that Christ does not compel anyone to follow Him. He has no need of the unwilling ones, but He desires that each person freely follow Him. Consequently, only those who willingly choose the Savior's path reach the Kingdom of Heaven.
Someone may say: 'I have faith, and faith suffices for salvation.' St. James gives him the answer: 'Even the demons believe, and shudder. Faith without works is dead.' (James 2:17-19)
Do not befoul your intellect by clinging to thoughts filled with anger and sensual desire. Otherwise you will lose your capacity for pure prayer and fall victim to the demon of listlessness.
Prayer demands that the mind should be pure of all thought and should admit nothing not belonging to prayer, even if it were good in itself. As if inspired by God the mind should withdraw from all things and hold its converse with Him alone.
It is important also to study our God-given faith in detail, since he who is indifferent toward truth is in danger of becoming easy prey for false teachers.
Do not disregard your conscience, which always counsels you of the best. It puts before you divine and angelic advice; it frees you from the hidden stains of your heart, and will make you the gift of free speech with God at the time of your departure.
If we cut off the causes of the passions for only a short while, and occupy ourselves with spiritual contemplation without making it our sole and constant concern, we easily revert to the passions of the flesh, gaining nothing from our labor but theoretical knowledge coupled with conceit. The result is a gradual darkening of this knowledge itself and a complete turning of the intellect towards material things.
The holy Church includes many people, men, women and children without number. They are all quite different from one another in birth, in size, in nationality and language, in style of living and age, in trades and opinions, in clothes and customs, in knowledge and rank, in welfare and in appearance. They are nonetheless all of them in the selfsame Church. Thanks to her, they are all reborn, newly created in the Spirit. The Church grants to all of them without distinction the grace of belonging to Christ and of taking His name by calling themselves Christians. Faith, moreover, puts us in a position which is extremely simple, and incapable of separation, in such a way that the differences between us seem not to exist, because everything is gathered together into the Church is reconciled in her. No one lives alone any more, no one is separated from the others, but all are mutually joined together as brothers and sisters in the simple and indivisible power of faith.
Go, sell all that belongs to you and give it to the poor and taking up the cross, deny yourself; in this way you will be able to pray without distraction.
Do not measure yourself by the standard of weaker men, but strive rather to apply yourself to the commandment of love. In measuring yourself by the former you fall into the pit of presumption, in striving for the latter you advance to the heights of humility.
It is no small struggle to be freed from self-esteem. Such freedom is to be attained by the inner practice of the virtues and by more frequent prayer; and the sign that you have attained it is that you no longer harbor rancor against anybody who abuses or has abused you.