An Uncommon Sanctuary

My sanctuary is a common place I keep it devoid of the human race A little paint on the glass makes a sign "Through these doors lies a solution Divine" "The value of 'x' is to be made clear As you, too, will hold algebra dear" Though years have passed and science has been cheered Algebra alone is hated and feared A perfect ploy for a sanctuary ruse As x's and y's make room for your muse 8-16-20 Contest: Sanctuary Sponsor: Silent One