1. Study sickness while
you are well.

2. If
you wish for peace, be prepared for war.

3.
You can't make an omelette without breaking eggs.

4. As long as ever
you can.

5.
You must lose a fly to catch a trout.

6. If
you want knwledge, you must toil for it.

7.
You cannot judge a tree by its bark.

8. Speak of angels and
you will hear their wings.

9. Hear twice before
you speak once.

10. Never trust another what
you should do yourself.

11.
You can’t touch pitch without being defiled.

12. As the wind blows,
you must set your sail.

13. I tell
you hopeless grief is passionless.

14. Grasp the nettle and it won't sting
you.

15.
You win some, you lose some.

16. Drive your business, do not let it drive
you.

17.
You can't have your cake and eat it.

19.
You have no goats, and yet you sell kids.

20. If
you command wisely, you'll be obeyed cheerfully.
Thomas Fuller 
21. Never trouble trouble till trouble troubles
you.

22. Don't try to run before
you can walk.

23. Don't halloo till
you are out of the wood.

24. Never (or Don't) trouble trouble till trouble troulbes
you.

25. Choose an author as
you choose a friend.

26. Depend on others and
you always repent.

27. When
you are at Rome[sentencedict.com], do as Rome does.

28.
You must not pledge your own health.

29. Learn to say before
you sing.

30. Don't burn your bridges behind
you.

1. Are you prepared to repeat these allegations in court?
2. How long will you be in Japan?
3. When do you want to play?
4. Be more specific about what you want to do.
5. Have you hugged your child today?
6. Have you any thoughts about our next holiday?
7. Are you doing anything over the weekend?
8. Do you have your milk delivered?
9. Can you give me a date for another appointment?
10. Where do you want to meet?
11. What are you trying to prove?
12. I hope you don't mind this intrusion, Jon.
13. How many children do you have?
14. I never said that! You must have misheard me.
15. Where are you going on your honeymoon?
16. Will you be free this afternoon?
17. The seat tilts forward, when you press this lever.
18. Can you do anything for my bad back, doctor?
19. How did you do on your maths test?
20. Could you spell your name, please?
21. Have you locked and bolted the door?
22. I insure that you will succeed.
23. It is not clear to us what you meant.
24. There are all sorts of jobs you could do.
25. How would you like your steak done?
26. How would you like your steak cooked?
27. Can you recommend a good dictionary?
28. I agree with you to some extent.
29. I can't express how grateful I am to you.
30. You are as old as you feel.