I will briefly give you my own opinion.
"You mean, no doubt, that, from your own experience, you fear that Vernon will hear at school many things which will shock his modesty, and much language which is evil and blasphemous; you fear that he will meet with many bad examples, and learn to look on God and godliness in a way far different from that to which he has been accustomed at home.

You fear, in short, that he must pass through the same painful temptations to which you have yourself been subjected; to which, perhaps, you have even succumbed.
"Well, Eric, this is all true.

Yet, knowing this, I say, by all means let Vernon come to Roslyn.

The innocence of mere ignorance is a poor thing; it _cannot_, under any circumstances, be permanent, nor is it at all valuable as a foundation of character.

The true preparation for life, the true basis of a manly character, is not to have been ignorant of evil, but to have known it and avoided it; not to hare been sheltered from temptation, but to have passed through it and overcome it by God's help.