[eksith]

Clarke's 1st law comes to mind :

  When a distinguished but elderly scientist states that something is possible, 
  he is almost certainly right. 
  When he states that something is impossible, he is very probably wrong.

The other two :

  2.The only way of discovering the limits of the possible 
    is to venture a little way past them into the impossible.
  3.Any sufficiently advanced technology is indistinguishable from magic.