Look before you leap.
He who hesitates is lost.
It is better to be safe than sorry.
Nothing ventured, nothing gained.
If at first you don't succeed, try, try again.
Don't beat your head against a stone wall.
Silence is golden.
The squeaky wheel gets the grease.
Actions speak louder than words.
The pen is mightier than the sword.
Many hands make light work.
Too many cooks spoil the broth.
Two is company; three is a crowd.
The more the merrier.
Clothes make the man.
Don't judge a book by its cover.
You're never too old to learn.
You can't teach an old dog new tricks.
Absence makes the heart grow fonder.
Out of sight, out of mind.
Good things come in small packages.
The bigger, the better.
Like attracts like.
Great minds think alike.
Fools never differ.
When in Rome, do as the Romans.
Above all, to thine own self be true.
Do unto others as you would have others do unto you.
Nice guys finish last.