The reason people find it so hard to be happy is that they always see the past better than it was, the present worse than it is, and the future less resolved than it will be.
Such is the life of a man. Moments of joy, obliterated by unforgettable sadness. There's no need to tell the children that.
A secret is not something unrevealed, but something told privately, in a whisper.
One has to look out for engineers - they begin with sewing machines and end up with the atomic bomb.