「人は見かけによらない」とはよく言ったものですね。の英語

It's well said that "You can't judge people by their appearance", isn't it?

So mottainai means "failing to appreciate the real worth of things."

The word mottainai also suggests a failure to respect the bonds between things.

One shouldn't criticize someone merely on hearsay [on someone else's say‐so].

One is apt to think oneself faultless. State the facts as they are.

One is apt to think oneself faultless. State the facts as they are.

I don't quite follow, but it looks like it will prove tricky. Ergh.

I don't quite follow but it looks like it will prove tricky.. Ergh.

What people say is not always true.

What people say isn't always true.

Who knows but that he may be right?

I don't like to carry out things exactly as I'm told.

It is rude to stare at strangers.

I talk to myself a lot, but there's no need to worry.

It is rude to stare at strangers.

You should refrain from acting as if you were looking down on others.

You must stop taking on a condescending air.

Appearances are often deceitful.

Saying what you think frankly is not a bad thing.

Some people are rather proud of being ignorant of such an important matter.

It is considered very bad form to point at others.

It is no use pretending you know nothing about it.

I'm dead against it whatever anybody else may say.

If you look hard at a man, he can not tell a lie.

You should not be misled by a person's appearance.

Granting that he was drunk, that is no excuse for his behaviour.

remained stupidly inarticulate and saying something noncommittal

It's impolite to stare at people.

It is malicious of him to expose people in public.

They consider it impolite to disagree with someone they don't know very well.