Happy π Day! And Albert Einstein was born #OTD 147 years ago! https://en.wikipedia.org/wiki/Pi Isaac Newton used infinite series to compute π to 15 digits, later writing "I am ashamed to tell you to how many figures I carried these computations". https://en.wikipedia.org/wiki/Pi#cite_note-Newton-60 "I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world." Einstein at PG: https://www.gutenberg.org/ebooks/author/1630 #books #mathematicsDay