“Even if you aren't in doubt, consider the mental welfare of the person who has to maintain the code after you, and who will probably put parens in the wrong place.”
In the perl man page.
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Larry Wall 294
American computer programmer and author, creator of Perl 1954Related quotes

To the author Ramachandra Sharma of this book who had said that he was incapable of total surrender to God as Masti had great faith in God page [Masti Venkatesha Iyengar, Masti, http://books.google.com/books?id=e6VqgWouUmUC, 2004, Katha, 978-81-87649-50-2, 26]
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“Do not doubt him who tells you he is afraid, but be afraid of him who tells you he has no doubts.”
Original German text: "Zweifle nicht an dem der dir sagt er hat Angst, aber hab Angst vor dem der dir sagt, er kennt keinen Zweifel."
from "100 Gedichte ohne Vaterland", pub. 1978.
“When code and comments disagree, both are probably wrong.”
More Programming Pearls: Confessions of a Coder, Column 6: Bumper-Sticker Computer Science. http://www.softwarequotes.com/ShowQuotes.asp?ID=660&Name=Schryer%20,_Norm&Type=Q