1. He applied red-hot nutshells on his legs, in order to make the hair grow smoother. Interesting technique, I wonder why it hasn't made it to the modern age.
2. He married Livia Drusilla when she was already six-months pregnant with her previous husband, Tiberius Claudius Nero. Augustus had already gone through two failed engagements and one divorce when he forced Claudius Nero to divorce Livia, and married her almost instantly. Love madness? Political calculations, since Livia was a descendent of a highly-regarded patrician Roman family? Hard to tell, after all these years.
What we know for sure is that the couple never had any children together, though both had children from previous marriages. Allegedly, Livia got pregnant once but she miscarried. This is unusual, considering Augustus' obsession with large families, but it's possible that Livia tried to reduce the number of potential heirs to the family fortune, protecting in this way the chances of her first born – and with great success.
The certain thing is that the pair formed a formidable team, and Livia continued to influence the Roman political life even after her husband's death.
3. Augustus was a monobrow. So much about realism in ancient Roman portrait sculpture.
Augustus of Prima Porta, probably the most famous representation of the first Roman Emperor. Here's another thing you don't need to know: the statue was designed to stay in one niche, so it uses an optical illusion: the raised hand is longer than it should be, in order to dominate the scene. The back of the statue is left unfinished, as it was going to be against the wall.
4. He wasn't a morning person. Well, coffee was not available, so whenever he knew he had duties to attend to in the morning, he slept at a friend's house, closer to the location where he had to arrive the next morning.
5. It seems unlikely that the man had any sense of humor, but it's hard to live almost 80 years without cracking a single joke, so here goes one, as reported by Quintilian: Augustus was informed that a tree was growing on an altar in his honor – which was probably supposed to be interpreted as a good omen. His reply was: “Well, this is clear proof of how often you use the altar to honor me”.
6. He was superstitious. All Romans were, but Augustus more than the average. If he put on his shoes the wrong way in the morning, the left instead of right, he would consider it a bad omen and avoid making major decisions during the day.
7. He died in the same room as his father Octavius, and stands out as the only emperor of the Julio-Claudian dynasty who managed to die peacefully in his own bed, without significant suspicions of foul play. His last words were to his wife: "Live mindful of our wedlock, Livia, and farewell". (What? Did he expect her to re-marry or to start throwing orgies in her 70s?)
8. He wasn't a heavy drinker, but we know that his favorite wine was Raetian.
Yep, it's still Augustus. In disguise.
9. Augustus left us with a memorable comment on one of the events that would traumatize Christianity for the following centuries. Upon hearing that King Herod of the Jews had ordered boys under the age of two to be put to death, he said: "I'd rather be Herod's pig than Herod's son."
10. He was obsessed with simplicity in his daily life, to the point where you might call him cheap. His house was modest, his furniture barely met the standards of a common citizen, and he insisted on wearing clothes made by the women of the house (Livia and his daughter, Julia. They were less thrilled with the joys of frugal living, and this escalated into several domestic conflicts, culminating with Julia's exile and death.)