The Ten Commandments of Typography by Paul Felton
1. Thou shalt not apply more than three typefaces in a document. (always remember that simplicity reigns over the disarray and confusion that use of many typefaces causes.)
2. Thou shalt lay headlines large and at the top of a page. (raise the headline to a windy height, roar out your summons, and beckon with considerable type size.
3. Thou shalt employ no other type size than 8pt to 10pt for body copy. (the lord will not leave unpunished he who disregards this rule)
4. Remember that a typeface that is not legible is not truley a typeface. (the dingbats and the disordered fuse fonts that foundries hold sacred are all worthless, and cursed are all who make them their delight)
5. Honour thy kerning, so that white space becomes visually equalized between characters. (kerning will save the reader time in deciphering writings)
6. Thou shalt lay stress discreetly upon elements within text. (the glory of God is to keep things hidden, but the glory of the foolish typographer is to over-emphasize them)
7. Thou shalt not use only capitals when setting vast body copy. (let thine eyes be fixed on the ascenders, bowls and finials of lowercase type)
8. Thou shalt always align letters and words on a baseline. (the lord designed letterforms to coexist side by side on an invisible line, so thou shalt give them a straight path to follow)
9. Thou shalt use flush-left, ragged-right type alignment. (Renounce the use of other alignments, for they bring extra torment upon already busy eyes)
10. Thou shalt not make lines too short or too long. (i command you to trust in an utmost of seventy characters per line, while a minimum of forty shall suffice)
