Computer programmer, mathematics graduate and fan of the great indoors.

Here are some quotes I like. This first one should be a house rule for SO:

You can't conquer poor learning with poor teaching.

Along the same lines there's Hanlon's razor:

Never attribute to malice that which is adequately explained by stupidity.

Finally, this one works for any profession but it seems particularly pertinent to software development:

If you think hiring a professional developer is expensive, try hiring an amateur.