S1E4: "Keeping a level head is a sign of a great leader" - Iroh

S1E6: "The strength of your heart makes you who you are" - Katara

S1E11: "Harsh words can't solve problems; action will" - Aang

S1E19: "With fierce determination, passion, and hard work, you can accomplish anything. Raw talent is not enough" - Pakku

S1E20: "It've always had to struggle and fight, it's made me who I am" - Zuko

S2E1: "There's always a right way to do things" - Katara

S2E2: "Love is brightest in the dark" - Katara reading in the Cave of Two Lovers

S2E2: "Sokka, I hope you learned a little something about not letting the plans get in the way of the journey" - Chong

S2E4: "We all have the same roots, and we are all branches of the same tree" - Huu

S2E4: "People we've loved, people we've lost.. but they're not; we're still connected to them. Time is an illusion, and so is death" - Huu

S2E5: "You must never give into despair. Allow yourself to slip down that road and you surrender to your lowest instincts. In the darkest times, hope is something you give yourself. That is the meaning of inner strength." -Iroh (wow)

S2E8: "There is nothing wrong with letting people who love you help you." - Iroh

S2E9: "It is important to draw wisdom from many different places. If you take it from only one place, it becomes rigid and stale. Understanding others... will help you become whole." - Iroh

S2E12: "Sometimes it hurts more to hope, and it hurts more to care" - Katara

S2E12: " As long as I'm confident with who I am, it doesn't matter what other people think" - Smeller Bee

S2E14: '' Life happens wherever you are, whether you make it or not.'' - Iroh

S2E15: "While it is great to believe in one self, a little help from others can be a great blessing" - Iroh

S2E20: "Sometimes life is like this dark tunnel. You can't see the light at the end, but if you just keep moving, you will come to a better place" - Iroh

S2E20: "Power and perfection are overrated. I think you are wise to choose happiness and love" - Iroh

S3E14: "No, it's not. Look, Sokka, you're going to fail a lot before things work out.Even though you'll probably fail over and over and over again...you have to try every time. You can't quit because you're afraid you might fail." - Zuko

S3E16: "The monks used to say that revenge is like a two-headed rat viper. While you watch your enemy go down, you're being poisoned yourself." - Aang

S3E18: "The true mind can weather all the lies and illusions without being lost. The true heart can tough the poison of hatred without being harmed. Since beginning-less time, darkness thrives in the void, but always yields to purifying light" - Lion Turtle

Just stole it : LINK