I encountered a little problem while writing my homework in LaTeX.
I wrote the following code:

```
\documentclass{article}
\begin{document}
\center{Title}
\vspace{18cm}\\
This line should be on the same page as the next one.
\begin{quote}
This line should be on the same page as the previous one.\\
This one could be broken to another page if needed.
\end{quote}
\end{document}  

```

But LaTeX breaks the page right after the first line, which I want to avoid.
Both `\nopagebreak` and `\\*` do not seem to work for me here. 
Any advice?
Thanks in advance.