This is my prediction for the future: Whatever hasn't happened will happen, and no one will be safe from it.

You can drop a mouse down a thousand-yard mine shaft and, on arriving at the bottom, it gets a slight shock and walks away. A rat would probably be killed, though it can fall safely from the eleventh story of a building, a man is broken, a horse splashes.

I will jump into the river to save two brothers or eight cousins.

Quantitative work shows clearly that natural selection is a reality, and that, among other things, it selects Mendelian genes, which are known to be distributed at random through wild populations, and to follow the laws of chance in their distribution to offspring. In other words, they are an agency producing variation of the kind which Darwin postulated as the raw material on which selection acts.

It was a reaction from the old idea of "protoplasm", a name which was a mere repository of ignorance.

Christianity is haunted by the theory of a God with a craving for bloody sacrifices.

So many new ideas are at first strange and horrible though ultimately valuable that a very heavy responsibility rests upon those who would prevent their dissemination.