William Penn. (1644–1718). Fruits of Solitude.
The Harvard Classics. 1909–14.
Inconsideration
30. The want of due Consideration is the Cause of all the Unhappiness Man brings upon himself. For his second Thoughts rarely agree with his first, which pass not without a considerable Retrenchment or Correction. And yet that sensible Warning is, too frequently, not Precaution enough for his future Conduct.
31. Well may we say our Infelicity is of our selves; since there is nothing we do that we should not do, but we know it, and yet do it.