J

Jack of all trades would teach his grandma a howling wolf had quiet depths.*

K

Keep straw, its time will come.

Keep your eyes open: a sale is a sale.

Keep your mouth shut and your ears open.

Kill not the goose that lays the golden eggs.

Know your own faults before blaming others for theirs.

Know yourself.

Knowledge without practice makes but half an artist.

L

Laugh, and the world would laugh with you; weep, and you weep alone.

Learn not and know not.

Leave a jest when it pleases you best.

Lend only that which you can afford to lose.

Let another's shipwreck be your seamark.

Let bygones be bygones.

Let the cobbler [shoemaker] stick to his last.

Let's wait and see how things will turn out in the morning. [It could be better to do things in the morning, if fresh, rested and in good shape, if time allows it.]

Life is half spent before we know what. [Abr.]

Like hen, like chicken.

Like loves (likes) like. [A jackdaw always perches beside another of its kind.]

Listen to others, but use your own mind.

Little by little we become fat.

Little pigs have big ears.

Little pitchers have big (great) ears.

Little sins make room for great.

Little thieves are hanged, but great ones escape.

Live and learn.

Long absence changes a friend.

Long life has long misery.

Look at the mother before marrying the daughter. [Mod. Observe the mother before you take the daughter. - It gives vent to the view that a young girl (or a bride) in some ways resembles her mother.]

Look before you leap.

Look to yourself when the neighbour's house is on fire.

Love is daring.

Love is lawless.

Love is the mother of all godliness.

Love me, love my dog.

Love your friend, but look to yourself.

Love your neighbour, yet don't pull down your hedge.