Depression is sadness gone wrong

The image of the disinterested, dispassionate scientist is no less false than that of the mad scientist who is willing to destroy the world for knowledge.

I would teach the world that science is the best way to understand the world and that for any set of observations, there is only one correct explanation. Also, science is value-free, as it explains the world as it is. Ethical issues arise only when science is applied to technology - from medicine to industry.

I strongly hold that, if an idea fits with common sense, then scientifically it is almost certain to be false.

It is not birth, marriage, or death, but gastrulation which is truly the most important time in your life.

The physics of motion provides one of the clearest examples of the counter-intuitive and unexpected nature of science.