“A quick temper will make a fool of you soon enough.”
“You do not make allowance enough for difference of situation and temper.”
“Any fool could see that you're at the reeling end of a long, strong rope - soon enough, It'll be tugging you back.”
“Half of the troubles of this life can be traced to saying yes too quickly and not saying no soon enough.”
“If you get careless or go romanticizing scientific information, giving it a flourish here and there, Nature will soon make a complete fool out of you.”
“You can fool some of the people some of the time -- and that's enough to make a decent living.”