Lucius Annaeus Seneca (often known simply as Seneca, or Seneca the Younger) (ca. 4 BC-AD 65) was a Roman Stoic philosopher, statesman, dramatist, and in one work humorist, of the Silver Age of Latin literature.
In my own time there have been inventions of this sort, transparent windows tubes for diffusing warmth equally through all parts of a building short-hand, which has been carried to such a perfection that a writer can keep pace with the most rapid speaker. But the inventing of such things is drudgery for the lowest slaves; philosophy lies deeper. It is not her office to teach men how to use their hands. The object of her lessons is to form the soul.
True happiness is to enjoy the present, without anxious dependence upon the future, not to amuse ourselves with either hopes or fears but to rest satisfied with what we have, which is sufficient, for he that is so wants nothing. The great blessings of mankind are within us and within our reach. A wise man is content with his lot, whatever it may be, without wishing for what he has not.