You cannot predict the future.

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

thus, in a sense, we are all doomed. even if we stay away from black holes

Computer viruses are alive.

The rate of progress is so rapid that what one learns at school or university is always a bit out of date. Only a few people can keep up with the rapidly advancing frontier of knowledge, and they have to devote their whole time to it and specialize in a small area. The rest of the population has little idea of the advances that are being made or the excitement they are generating.

Children in backseats cause accidents. Accidents in backseats cause children.

If at first you don't succeed, try management.