# Changing the font for a custom environment

I can't figure out how to embed a command like \textbf or something in a newly created environment, I have:

\newenvironment{definition}
{\begin{quote}}
{\end{quote}}


I want to customize my definition environment with some additional commands, but if I try something simple like:

\newenvironment{definition}
{\textbf{\begin{quote}}
{\end{quote}}}


pdflatex refuses to compile a PDF. Where am I wrong? Is there a limit for a newly created environment?

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\newenvironment{definition}