#Javascript ES6, 196 191 bytes
m=Math;alert("The eighteen-hundreds were a time for rum.\nThe nineteen-hundreds were a time for fun.\nThe two-thousands are a time to run\na civilized classroom.".repeat(~~(m.exp(m.PI)+m.E)))
Your teacher doesn't want any numbers, but since they are an english teacher, they've got no clue what Math.floor(Math.exp(Math.PI)+Math.E) means.
More readably:
alert("The eighteen-hundreds were a time for rum.\n\
The nineteen-hundreds were a time for fun.\n\
The two-thousands are a time to run\na civilized classroom.".repeat(Math.floor(Math.exp(Math.PI)+Math.E)))
Must be run in the latest firefox