亲代投资是理解两性交配策略差异的关键。
科学的美丽在于它不断发展和挑战我们对世界的理解的能力。
你能给予的最大礼物是真实的自己。
Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful. But most people will die tomorrow night, so don't give up today.