Finally, it is generally agreed that no a activity can be properly undertaken by a man who is busy with many things – not eloquence, and not the liberal arts – since the mind, stretched in different directions, takes nothing at any depth but spits out everything that has been, so to speak, crammed into it. Nothing concerns the busy man less than the business of living: nothing is so difficult to learn.

Seneca, ‘On the Shortness of Life’