"Happiness consists of living each day as if it were the first day of your honeymoon and the last day of your vacation." 

-Leo Nikolayevich Tolstoy

"Happiness is like a butterfly; the more you chase it, the more it will elude you. But if you turn your attention to other things, it will come and sit softly on your shoulder." 

-Henry David Thoreau

"Happiness does not depend on outward things, but on the way we see them." 
-Leo Nikolayevich Tolstoy

“Calm in quietude is not real calm. When you can be calm in the midst of activity, this is the true state of nature. Happiness in comfort is not real happiness. When you can be happy in the midst of hardship, then you see the true potential of the mind.” 

-Huanchu Daoren

"Judge nothing, you will be happy. Forgive everything, you will be happier. Love everything, you will be happiest." 

-Sri Chinmoy

"The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well." 
-Ralph Waldo Emerson

"Thousands of candles can be lighted from a single candle, and the life of the candle will not be shortened. Happiness never decreases by being shared." 
-Gautama Buddha

"If you think that peace and happiness are somewhere else and you run after them, you will never arrive."
-Thich Nhat Hanh

"The glow of one warm thought is to me worth more than money."
-Thomas Jefferson

"The world is like a mirror, you see? Smile, and your friends smile back."
-Zen Proverb

“Calm in quietude is not real calm. When you can be calm in the midst of activity, this is the true state of nature. Happiness in comfort is not real happiness. When you can be happy in the midst of hardship, then you see the true potential of the mind.”
-Hung Tzu-Ch'eng

"Happiness is when what you think, what you say, and what you do are in harmony."
-Mahatma Gandhi

"What do people mean when they talk about unhappiness? It is not so much unhappiness as impatience that from time to time possesses men, and then they choose to call themselves miserable." 
-Johann Wolfgang von Goethe

"A cheerful temper, joined with innocence, will make beauty attractive, knowledge delightful and wit good-natured. It will lighten sickness, poverty and affliction, convert ignorance into an amiable simplicity, and render deformity itself agreeable."

-Joseph Addison

"To practice Zen Buddhism is to train oneself to eliminate hatred, anger, and selfishness and to develop loving-kindness towards all." 
-Thich Thien-An

"You are the sole individual capable of placing shackles on the feet of your joy. Fortunately, you are also the one who holds the key."
-Nea Joy Justice

"Happiness is the absence of the striving for happiness." 

-Chuang Tzu

"I cannot tell if what the world considers 'happiness' is happiness or not. All I know is that when I consider the way they go about attaining it, I see them carried away headlong, grim and obsessed, in the general onrush of the human herd, unable to stop themselves or to change their direction. All the while they claim to be just on the point of attaining happiness." 
-Chuang Tzu