31-----Rome wasn't built in a day

Do not be discouraged if your goal still seems far away. On a big project, success takes time!

32-----There is more here than meets the eye

Be careful. People are hiding something in order to protect themselves or take advantage of you.

33-----The customer is always right

Businesses instruct their clerks not to do anything that might threaten a customer's self-esteem, no matter how unreasonable the customer is. Any complaint of any customer must be carefully and politely heard by any employee. The customer must not be made to feel ignorant.
　
34-----Be true to yourself

Do not compromise yourself or your beliefs in order to please other people or fit in with a system. Know who you are. Let other people know what you stand for. Do not give in to pressure to conform or to do things you do not agree with.
　
35-----Once bitten, twice shy

This may be used to explain the behavior of a person who is overly cautious about something. The wise person makes mistakes but does not usually make the same mistake twice.

36-----It isn't over till the fat lady sings

I refuse to admit defeat yet. Though right now it looks like I may fall, there is still time for things to change. (The "fat lady" is an insulting reference to an opera soloist, opera often end with a female solo.)

37-----To each his own

Each individual should be allowed to have his or her own preferences. people will naturally choose different activities, goals, life-s, etc.

38-----Looking out for number one

Looking out for one's own personal welfare more than anything else. This is sometimes used to criticize a person who has abused or taken advantage of someone else, "All he was doing was looking out for number one." Or it may be used to defend himself or herself, "There is nothing wrong with what I did. I was just looking out for number one."

39-----When the going gets tough, the tough get going

When situation is difficult, only the determined people can handle it. They don't give up!

40-----Times flies when you are having fun

A day seems shot when it is full of enjoyable things but it seems like an eternity if one is idle or stuck with a boring job.