This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
read full book
Observe, in this context, the intellectual precision of the Founding Fathers: they spoke of the right to the pursuit of happiness — not of the right to happiness. It means th
at a man has the right to take the actions he deems necessary to achieve his happiness; it does not mean that others must make him happy.
The right to life means that a man has the
right to support his life by his own work (on any economic level, as high as his ability will carry him); it does not mean that others must provide him with the necessities of life.