Necessity is the mother of invention.
Never fish in trouble water.
Never judge from appearances.
Never too old to learn, never too late to turn.
No garden without its weeds.
No living man all things can.
No man can do two things at once.
No man is born wise or learned.
No man is wise at all times.
None are so blind as those who won’t see.
None are so deaf as those who won’t hear.
No one can call back yesterday.
No pleasure without pain.
Nothing brave, nothing have.
Nothing dries sooner than a tear.
Nothing in the world is difficult for one who sets his mind to it.
Nothing is difficult to the man who will try.
Nothing seek, nothing find.
Nothing is so necessary for travelers as languages.
Nothing is to be got without pains but poverty.
Not to advance is to go back.
Not to know what happened before one was born is always to be a child.
No way is impossible to courage.