Just in case I'm not making myself clear...
No one at work gives a flying fuck what inspires you and they damn sure aren't inspired by some stupid little quote at the bottom of your emails. During the work day, no one gives a shit what Mother Teresa said. No one cares what your favorite bible verse is. No one likes the "clever" little way you view life or adversity or anything outside the day's business.
If you have useless crap like that on your work emails, you're an unprofessional twat.