1 The Pleasure Of Finding Things Out - Richard Feynman
2 Unweaving The Rainbow - Richard Dawkins
3 Ever Since Darwin - Stephen Jay Gould
I could have chosen any one of Gould's books but I chose this since it was the first time I read him. He got more verbose and perhaps a little too long winded towards the end, but there was no stylist writing in science better than him at the time, roughly the mid-70s through to 2000.
4 The Cosmic Connection - Carl Sagan
This was the first grown up science book I ever bought, age 11. Surprisingly, I found it in the local Woolworths - I certainly had not expected that result. It was a bit much at the time, I wasn't experienced in science sufficiently to follow all the examples, but it astounded me that there was so much I had yet to learn.
5 The Life Sciences - PB & JS Medewar
I read this at an influential time in my life, sixteen, on the threshold of O levels and dating a girl whose father was the chief scientist in the UK. Again a real eye opener, showing that there was so much in my chosen field that I had yet to encounter. Another stylish writer too.
I realise many people are not interested in science, which is a shame, but were they to pick up some of the foregoing books, I am sure they would come to realise that what they have missed is immense and awe inspiringly wonderful.