The whole world is not worth one soul.

We have freedom to do good or evil; yet to make choice of evil, is not to use, but to abuse our freedom.

Frequent not the company of immodest persons, especially if they be also impudent, as is generally the case; ...these corrupted souls and infected hearts scarcely speak to any, either of the same or a different sex, without causing them to fall in some degree from purity; they have poison in their eyes and in their breath, like basilisks. On the contrary, keep company with the chaste and virtuous; often meditate upon and read holy things; for the word of God is chaste, and makes those also chaste that delight in it.

Never be hurried in anything. Do all things calmly and in a spirit of repose. Do not lose your inward peace even if everything seems to be going wrong. What is anything in life compared to peace of soul?

The enemy often tries to make us attempt and start many projects so that we will be overwhelmed with too many tasks, and therefore achieve nothing and leave everything unfinished. Sometimes he even suggests the wish to undertake some excellent work that he foresees we will never accomplish. This is to distract us from the prosecution of some less excellent work that we would have easily completed. He does not care how many plans and beginnings we make, provided nothing is finished.

Be patient with everyone, but above all with yourself. I mean do not be disheartened by your imperfections, but always rise up with fresh courage

Chastity is the lily of virtues, and makes men almost equal to Angels. Everything is beautiful in accordance with its purity. Now the purity of man is chastity, which is called honesty, and the observance of it, honor and also integrity; and its contrary is called corruption; in short, it has this peculiar excellence above the other virtues, that it preserves both soul and body fair and unspotted.