These are 2 of my favorite karate quotes, they really motivate and inspire you:
"The ultimate aim of Karate lies not in victory or defeat, but in the perfection of the character of its participants." -- Gichin Funakoshi
"The Way is not meant as a way of fighting. It is a path on which you travel to find your own inner peace and harmony. It is yours to seek and find." -- Hironori Ohtsuka
If you have some quotes, post them here