“Only a fool is not afraid.”

“I really wish I was less of a thinking man and more of a fool not afraid of rejection.”

“Only a fool can't be fooled.”

“Only a fool has no regrets and I'm not a fool.”

“He that hath truth on his side is a fool as well as a coward if he is afraid to own it because fo other mens's opinions.”

“Only fool! Only poet!
Merely speaking colorfully,
From fools' masks shouting colorfully,
Climbing about on deceptive word-bridges,
On misleading rainbows,
Between false heavens
Rambling, lurking —
Only fool! Only poet!”

“Only a fool would refuse to enter a fool's paradise — when that's the only paradise he'll ever have a chance to enter.”

“Only fools get to join.”

“Tell me then, does love make one a fool or do only fools fall in love?”

“Anger dwells only in the bosom of fools.”