It is characteristic of all deep human problems that they are not to be approached without some humor and some bewilderment.

One thing that being a scientist has taught me is that you can never be certain about anything. You never know the truth. You can only approach it and hope to get a bit nearer to it each time. You iterate towards the truth. You don't know it.

I had a huge advantage when I started 50 years ago - my job was secure. I didn't have to promote myself. These days there's far more pressure to make a mark so the temptation is to make adventure television or personality shows. I hope the more didactic approach won't be lost.

The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil.

To maximize our potential to enhance our health and our knowledge we should remain open to new understanding and evolving technology or resources that might inspire a change in our approach to these important questions.

If the goal of health-care reform is to provide comprehensive universal health care in a cost-effective way the only honest approach is a single-payer approach.

But if you're asking my opinion I would argue that a social justice approach should be central to medicine and utilized to be central to public health. This could be very simple: the well should take care of the sick.

The last part the part you're now approaching was for Aristotle the most important for happiness.

If virtue promises happiness prosperity and peace then progress in virtue is progress in each of these for to whatever point the perfection of anything brings us progress is always an approach toward it.

Truth is I'll never know all there is to know about you just as you will never know all there is to know about me. Humans are by nature too complicated to be understood fully. So we can choose either to approach our fellow human beings with suspicion or to approach them with an open mind a dash of optimism and a great deal of candour.