在野外，没有捷径。你必须为每一步付出努力。

The moment the idea is admitted into society that property is not as sacred as the laws of God, and that there is not a force of law and public justice to protect it, anarchy and tyranny commence.

发展过程简单来说就是：在每一代中，两个亲本性状都会出现，分离且不变。

理论与观测之间的相互作用推动了天体物理学的发展。