A man acquainted with history may, in some respect, be said to have lived from the beginning of the world, and to have been making continual additions to his stock of knowledge in every century.

Incorporating small changes/additions in one's daily routine can have a big impact. For example, eating a healthy diet, including a handful of almonds every day and a regular exercise regime, not only helps me maintain a healthy life but also balance both my family's health as well as my own.

Thousands of years ago humans domesticated every possible large wild mammal species fulfilling all those criteria and worth domesticating with the result that there have been no valuable additions of domestic animals in recent times despite the efforts of modern science.

A man acquainted with history may in some respect be said to have lived from the beginning of the world and to have been making continual additions to his stock of knowledge in every century.