Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so. 630
The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature. 758
There are people who can do all fine and heroic things but one – keep from telling their happiness to the unhappy. 676
We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness. 1.5K
There is only one way to happiness and that is to cease worrying about things which are beyond the power of our will. 610