Here's a Challenge: Study a complicated topic in such detail that anyone interested can nod their head and understand as you explain specific concepts within the topic.

What we don't know is much more than what we know.

If the bee disappeared off the surface of the globe, then man would have only four years of life left. No more bees, no more pollination, no more plants, no more animals, no more man.

Isn't it strange that I who have written only unpopular books should be such a popular fellow?

The point is to develop the childlike inclination for play and the childlike desire for recognition and to guide the child over to important fields for society. Such a school demands from the teacher that he be a kind of artist in his province.

I think that only daring speculation can lead us further and not accumulation of facts.

God is a scientist, not a magician.