A happy life consists in ...

A happy life consists in tranquility of mind.
A happy life consists in tranquility of mind.

Quotes from the same author

Let arms give place to the robe, and the laurel of the warriors yield to the tongue of the orator.
Philosophy is the true mother of science.
Such are a well regulated militia, composed of the freeholders, citizen and husbandman, who take up arms to preserve their property, as individuals, and their rights as freemen.
This wine is forty years old. It certainly doesn't show its age.
If you would abolish covetousness, you must abolish its mother, profusion.