Doubt

A man and his lady-love, Min,
Skated out where the ice was quite thin.
Had a quarrel, no doubt,
For I hear they fell out,
What a blessing they didn't fall in!
There was an Old Man on some rocks,
Who shut his wife up in a box;
When she said, 'Let me out!'
He exclaimed, 'Without doubt,
You will pass all your life in that box.'
“Better to remain silent and be thought a fool than to speak out and remove all doubt.”
Abraham Lincoln
“Never doubt the courage of the French. They were the ones who discovered that snails are edible.”
Doug Larson
If you doubt whether bowling is a sport, get it from me, that yes, it is a sport, but for people who have talent to spare.
Most of your players never make it out of the lower-level tournaments. I highly doubt their Futures as a professional.