Order is the first law of heaven, and you have to have order to survive on Earth. Figure out what has to be done each day, each week, each year and develop a system to achieve it.

John C. Crosby
The first law in advertising is to avoid the concrete promise... and cultivate the delightfully vague.

Mark Hyman
It is just physics - who can argue with Newton and the first law of thermodynamics?

Samuel Butler
Self-preservation is the first law of nature.

I, Robot
[first title cards]
Title card: Law I / A robot may not harm a human or, by inaction, allow a human being to come to harm
Title card: Law II / A robot must obey orders given it by human beings except where such orders would conflict with the first law
Title card: Law III / A robot must protect its own existence as long as such protection does not conflict with the first or
second law