14. There is another temptation--we ought to be aware of it, and be cautious in our conduct: persons are carried away by a zeal for virtue, through the pain which the sight of the sins and failings of others occasions them. Satan tells them that this pain arises only out of their desire that God may not be offended, and out of their anxiety about His honour; so they immediately seek to remedy the evil. This so disturbs them, that they cannot pray. The greatest evil of all is their thinking this an act of virtue, of perfection, and of a great zeal for God. I am not speaking of the pain which public sins occasion, if they be habitual in any community, nor of wrongs done to the Church, nor of heresies by which so many souls are visibly lost; for this pain is most wholesome, and being wholesome is no source of disquiet. The security, therefore, of that soul which would apply itself to prayer lies in casting away from itself all anxiety about persons and things, in taking care of itself, and in pleasing God. This is the most profitable course. 15. If I were to speak of the mistakes which I have seen people make, in reliance on their own good intentions, I should never come to an end. Let us labour, therefore, always to consider the virtues and the good qualities which we discern in others, and with our own great sins cover our eyes, so that we may see none of their failings. This is one way of doing our work; and though we may not be perfect in it at once, we shall acquire one great virtue--we shall look upon all men as better than ourselves; and we begin to acquire that virtue in this way, by the grace of God, which is necessary in all things--for when we have it not, all our endeavours are in vain--and by imploring Him to give us this virtue; for He never fails us, if we do what we can. 16. This advice, also, they must take into their consideration who make much use of their understanding, eliciting from one subject many thoughts and conceptions. As to those who, like myself, cannot do it, I have no advice to give, except that they are to have patience, until our Lord shall send them both matter and light; for they can do so little of themselves, that their understanding is a hindrance to them rather than a help.