#### Quote of the day

The best time to frame an answer to the letters of a friend, is the moment you receive them. Then the warmth of friendship, and the intelligence received, most forcibly cooperate.

#### Abraham de Moivre

**Born:**May 26, 1667

**Died:**November 27, 1754

**(aged 87)**

**Bio:**Abraham de Moivre was a French mathematician known for de Moivre's formula, one of those that link complex numbers and trigonometry, and for his work on the normal distribution and probability theory. He was a friend of Isaac Newton, Edmond Halley, and James Stirling.

**Known for:**