Alexander Schmemann was a man who lived a long time ago and was very important to some people. He was born in Estonia in 1921 and was a priest in the Orthodox Church.
He believed that people needed to remember that their lives are connected to God and that they should have a special time of the week when they go to church and spend time with God. He called this time "Sunday," and thought it was very important for people to remember why they were alive and to give thanks to God for everything.
Schmemann also wrote books and articles to help people understand how important it is to have a special relationship with God. He talked about how people should prepare for things like Christmas and Easter, so that they could better understand the meaning behind these special days.
Overall, Alexander Schmemann was a person who believed in the importance of connecting with God, and he wanted to help other people see how much God loved them and how much they could learn from him.