I have found far greater enthusiasm for science in America than here in Britain. There is more enthusiasm for everything in America.Stephen Hawking
I'm an investor in a number of biotech companies, partly because of my incredible enthusiasm for the great innovations they will bring.Bill Gates
I think we're having fun. I think our customers really like our products. And we're always trying to do better.Steve Jobs
Just as food eaten without appetite is a tedious nourishment, so does study without zeal damage the memory by not assimilating what it absorbs.Leonardo da Vinci