One can tell a child everything, anything. I have often been struck by the fact that parents know their children so little. They should not conceal so much from them. How well even little children understand that their parents conceal things from them, because they consider them too young to understand! Children are capable of giving advice in the most important matters.
Give us grace and strength to forbear and to persevere. Give us courage and gaiety, and the quiet mind. Spare to us our friends, soften to us our enemies. Bless us, if it may be, in all our innocent endeavours. If it may not, give us the strength to encounter that which is to come, that we may be brave in peril, constant in tribulation, temparate in wrath, and in all changes of fortune, and down to the gates of death, loyal and loving to one another.
The greatest rewards come when you give of yourself. It's about bettering the lives of others, being part of something bigger than yourself, and making a positive difference.
In the book, D'Artagnan doesn't actually become an official Musketeer until quite near the end, and we make quite a big thing about that. I won't give too much away, but when he finally does make it, they're not going to make it easy for him. That never changes.
Ethics, like natural selection, make existence possible. Aesthetics, like sensual selection, make life lovely and wonderful, fill it with new forms, and give it progress, and variety and change.