Harry Truman
A pessimist is one who makes difficulties of his opportunities and an optimist is one who makes opportunities of his difficulties.
Winston Churchill
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
Lyn St. James
A second ago is gone, and a second from now might be. Now is all you've got. Go for it!
Dave Weinbaum
A window of opportunity won't open itself.
Thomas Fuller
A wise man turns chance into good fortune.
Francis Bacon
A wise man will make more opportunities than he finds.
Napoleon Bonaparte
Ability is of little account without opportunity.
John Greenleaf Whittier
All the windows of my heart I open to the day.
Unknown Author
An optimist sees and opportunity in every calamity. A pessimist sees a calamity in every opportunity.
Horace
Ask not what tomorrow may bring, but count as blessing every day that Fate allows you.

