I can only wonder if this is the same for everyone else.

You can do it.

One can't expect everything from schools.

I don't like it when mathematicians who know much more than I do can't express themselves explicitly.

I can't explain it either.

It's not something anyone can do.

Whatever I do, she says I can do better.

Let me know if there is anything I can do.

I'm sorry, I can't stay long.

"I can't think with that noise," she said, as she stared at the typewriter.

I couldn't have done it without you. Thank you.

Where can one make a phone call?

Bicycles are tools for urban sustainability.

What do you believe is true even though you cannot prove it?

If you don't understand something, it's because you aren't aware of its context.

The past can only be known, not changed. The future can only be changed, not known.

The key question is not what can I gain but what do I have to lose.

You're irresistible.

It's a pity that you can't buy miracles like you would buy potatoes.

Anything that is too stupid to be spoken is sung.