tex 명령어에 \hangindent \hangafter 라는게 있는데, 그것들을 잘 이용하시면 원하는 결과를 얻을 수 있습니다.

예를들어.

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\documentclass{article}

\begin{document}

\def\myindent{\par\noindent\hangindent\parindent}

\myindent{Donald Knuth: }The success of open source code is perhaps the only thing in the computer field that hasn’t surprised me during the past several decades. But it still hasn’t reached its full potential; I believe that open-source programs will begin to be completely dominant as the economy moves more and more from products towards services, and as more and more volunteers arise to improve the code

\myindent{Donald Knuth: }The success of open source code is perhaps the only thing in the computer field that hasn’t surprised me during the past several decades. But it still hasn’t reached its full potential; I believe that open-source programs will begin to be completely dominant as the economy moves more and more from products towards services, and as more and more volunteers arise to improve the code

\end{document}