Who said "I have always found that duty provides purpose."?

This quote is attributed to Tuvok.

I have always found that duty provides purpose. - Tuvok

"I have always found that duty provides purpose."

Tuvok Work

"Logic is the foundation of all reasoning."

"Emotions can be illogical, yet they define humanity."

"The pursuit of knowledge requires discipline and focus."

"Control of one's emotions is the first step to self-mastery."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."