Laziness is nothing more than the habit of resting before you get tired. Jules Renard
Perseverance is the hard work you do after you get tired of doing the hard work you already did. Newt Gingrich
I never get tired of smiling. I'm just the kind of guy who likes to smile. Jason Ritter
An elephant does not get tired carrying his trunk. Burundi Proverb
The elephant does not get tired of its tusks. Maasai Proverb
Those who earn a lot are seldom tired, those who get tired seldom earn a lot. Chinese Proverb