Clarke's three laws:
1st:
When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
2nd:
The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
3rd:
Any sufficiently advanced technology is indistinguishable from magic.
-- Arthur C. Clarke


Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bathe and not make messes in the house.
-- Robert A. Heinlein