Sandy and Dennys Murry

Alexander "Sandy" Murry and Dennys Murry are fictional characters in Madeleine L'Engle's Time Quartet. They play only minor roles in three of the books but are the protagonists of Many Waters. As an adult, Sandy is a major character in A House Like a Lotus.

During their younger years, Sandy and Dennys are the "practical" members of the Murry family, maintaining what they consider a realistic view of the world. Until their adventures in Many Waters, and to some extent even afterward, they tend not to witness the extraordinary events the rest of the family encounters, and assume there must be a rational explanation for them. As adults they have a more comprehensive view of the world, recognizing both its practical aspects and the need to fight the evils encountered there. The twins are very close to each other, with Sandy usually being the leader. It is said that they seldom disagree on any subject for long.

Sandy and Dennys are overshadowed by their Nobel Prize-winning mother and space-traveling physicist father, their mathematical genius sister Meg Murry and their extraordinary younger brother Charles Wallace Murry. However, the twins are quite smart themselves. At age eleven, Sandy quotes Robert Burns correctly, and knows what a rachis is. Both twins understand the conservation of matter and Albert Einstein's most famous equation at the same age. Despite this, Sandy and Dennys are considered the "normal" members of the family rather than misfits. They get along well with their peers, are good at sports, and as children maintain a B average in school.

As of A Wind in the Door, Sandy aspires to become a banker, on the grounds that it is practical and lucrative. Dennys apparently concurs. Their career plans are refined as they get older, with Sandy studying to be a lawyer and Dennys a medical doctor.

...
Wikipedia