Bedtime reading

At the end of my first day back at work after holiday. Glad the day is over and have time to read a book begun while i was away The book is a present from my son. Inside he wrote 'to see a world in a grain of sand and heaven in a wild flower, hold infinity in the palm of your hand and eternity in an hour' Blake. I would not have chosen it but I am loving the short biographies of these giants of the enlightenment. And that my son and I share a love of reading and encourage each other to explore unfamiliar territory