Autores:
  • You will pardon some obscurities, for there are more secrets in my trade than in most men's, and yet not voluntarily kept, but inseparable from its very nature. I would gladly tell all that I know about it, and never paint "No Admittance" on my gate.

    Henry David Thoreau (1995). “Walden, Or, Life in the Woods”, p.10, Courier Corporation