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.

We all try to escape pain and death, while we seek what is pleasant.

If you want to know the future, look at the past.

Nature conceals her secrets because she is sublime, not because she is a trickster.

I regard class differences as contrary to justice and, in the last resort, based on force.

Thinking is to man what flying is to birds. Don’t follow the example of a chicken when you could be a lark.

Men should continue to fight, but they should fight for things worth while, not for imaginary geographical lines, racial prejudices and private greed draped in the color's of patriotism.