By request, here's a .pdf file with the 42 quotes (selected from my growing collection) that we use during Teacher Appreciation Week. They are formatted in varying fonts, one quote with attribution per page.
Teacher Appreciation Week Posters
with Quotes about Education (pdf)
We print these in color (when available) and a group of parents plasters the school overnight, just before the beginning of Teacher Appreciation Week.
Please note: I'm experimenting with different document hosting configurations. I plan to keep this post pointing to the correct file. If you wish to bookmark the file, please bookmark this post as a pointer to it, instead, because the file might move to a different host.
Feel free to download this to honor your teachers.