“There is true religion in that man who, instead of endeavoring to perfect but one department of his nature, makes his physical, mental, social, and moral life, equal. Cultivate your physical nature, perfect your life, and in that proportion your soul will be perfect. Cultivate strength, vigor, power, manliness, and symmetry, and in that proportion the soul can think greater thoughts.”

“The Religion of Life” (1858)

Source: Eat, Pray, Love (2006)
Context: People think a soul mate is your perfect fit, and that's what everyone wants. But a true soul mate is a mirror, the person who shows you everything that is holding you back, the person who brings you to your own attention so you can change your life.
A true soul mate is probably the most important person you'll ever meet, because they tear down your walls and smack you awake. But to live with a soul mate forever? Nah. Too painful. Soul mates, they come into your life just to reveal another layer of yourself to you, and then leave.
A soul mates purpose is to shake you up, tear apart your ego a little bit, show you your obstacles and addictions, break your heart open so new light can get in, make you so desperate and out of control that you have to transform your life, then introduce you to your spiritual master…

Sermon preach at St. Marys, December 10, 1661, in Twelve Sermons Preached Upon Several Occasions (1727), Vol. 3, p. 140

Disputed
Context: So live your life that the fear of death can never enter your heart. Trouble no one about their religion; respect others in their view, and demand that they respect yours. Love your life, perfect your life, beautify all things in your life. Seek to make your life long and its purpose in the service of your people. Prepare a noble death song for the day when you go over the great divide. Always give a word or a sign of salute when meeting or passing a friend, even a stranger, when in a lonely place. Show respect to all people and grovel to none. When you arise in the morning give thanks for the food and for the joy of living. If you see no reason for giving thanks, the fault lies only in yourself. Abuse no one and no thing, for abuse turns the wise ones to fools and robs the spirit of its vision. When it comes your time to die, be not like those whose hearts are filled with the fear of death, so that when their time comes they weep and pray for a little more time to live their lives over again in a different way. Sing your death song and die like a hero going home.

As quoted in A Sourcebook for Earth's Community of Religions (1995) by Joel Diederik Beversluis; but also ascribed to some of the Wabasha chiefs, Sitting Bull, Crazy Horse and Wovoka, according to Ernest Thompson Seton, The Gospel of the Red Man: An Indian Bible, San Diego, The Book Tree, 2006, p. 60

Syst. Indus, VI, 17, as quoted from E.Durkheim, Socialism and Saint-Simon (1958)

“The Religion of Life” (1858)

On naval timber and arboriculture (1831), Appendix B

Discourses on the Condition of the Great