Often we can help each other most by leaving each other alone; at other times we need the hand-grasp and the word of cheer.

Know what you want to do, hold the thought firmly, and do every day what should be done, and every sunset will see you that much nearer to your goal.

Do your work with your whole heart, and you will succeed - there's so little competition.

It does not take much strength to do things, but it requires great strength to decide on what to do.

I've always been interested in animal behavior, and I keep reading about it because it's so surprising all the time - so many things are happening around us that we neglect to look at. Part of the passion I have for biology is based on this wonderment.

Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.

For pure joy, I look at a small painting by Arbit Blatas. An ocean liner is at the center of the composition, perhaps ready to depart. It holds the promise of discovery.

The scientific effort to inform the public about landslide risks often runs head-on into powerful economic interests.