Every action has an equal and an opposite reaction. Similarly, every proverb has an equal and an opposite proverb! There always exist two sides of the same coin.
All good things come to those who wait BUT Time and tide wait for no man.
The pen is mightier than the sword BUT Actions speak louder than words.
Wise men think alike BUT Fools seldom differ.
The best things in life are free things BUT There's no such thing as a free lunch.
Slow and steady wins the race BUT Time waits for no man.
Look before you leap BUT Strike while the iron is hot.
Do it well, or not at all BUT Half a loaf is better than none.
Birds of a same feather flock together BUT Opposites attract.
Doubt is the beginning of wisdom BUT Faith will move mountains.
Great starts make great finishes BUT It ain't over 'till it's over.
Practice makes perfect BUT All work and no play makes Jack a dull boy.
Silence is golden BUT The squeaky wheel gets the grease.
You're never too old to learn BUT You can't teach an old dog new tricks.
Absence makes the heart grow fonder BUT Out of sight, out of mind.
Too many cooks spoil the broth BUT Many hands make light work.
PPB3K does not contradict with common sense.