1、Youth looks forward and age backward.
2、You may force a man to shut his eyes, but you cannot make him sleep.
3、You can't eat your cake and have it.
4、You can fool some of the people all the time, and all of the people some of the time; but you can't fool all of the people all the time.
5、You cannot judge a tree by its bark.
6、You can do more than strike while the iron is hot; you can make the iron hot by striking.
7、Youth means limitless possibilities.
8、You never know what you can do till you try.
9、You must reap what you have sown.
10、You are the greatest enemy if you are a coward, but if you are brave, you are your greatest friend.
11、You cannot clap with one hand.
12、Youth is a blunder; manhood a struggle, old age a regret.
13、Yesterday will not be called again.
14、Young man may die but old men must die.
15、Years bring wisdom.
16、Yesterday is dead, forget it; tomorrow does not exist, don't worry; today is here, use it.
17、You may know by a handful the whole sack.
18、Youth is the season of hope, enterprise, and energy, to a nation as well as an individual.
19、You cannot eat your cake and have it.
20、You cannot make a crab walk straight.
21、You roll my log and I'll roll yours.
22、You have no goats, and yet you sell kids.
23、You may go farther and fare worse.
24、You cannot flay the same ox twice.
25、You can't make omelets （or omeletts） without breaking eggs.
26、You make the failure complete when you stop strying.
27、You cannot sell the cow and sup the milk.
28、You cannot have two forenoons in the same day.
29、You can take a horse to the water but you cannot make him drink.
30、You never know what you can till you try.
31、You can take a horse to the water but you cannot make him drink.
32、Youth is life's seed-time.
33、You may know the horse by his harness.
34、You can't make bricks without straw.
35、You cannot burn the candle at both ends.
36、You must not pledge your own health.
37、You （or One） cannot make a silk purse out of a sow's ear.