Knowing when to leave may be the smartest thing anyone can learn.

Knowing when to leave may be the smartest thing anyone can learn.

It is the worst of madness to learn what has to be unlearnt.
[Lat., Extremae est dementiae discere dediscenda.]

It is the worst of madness to learn what has to be unlearnt.
[Lat., Extremae est dementiae discere dediscenda.]

In the end we retain from our studies only that which we practically apply.

In the end we retain from our studies only that which we practically apply.

By studying the masters and not their pupils.

By studying the masters and not their pupils.

All wish to possess knowledge, but few, comparatively speaking, are willing to pay the price.

All wish to possess knowledge, but few, comparatively speaking, are willing to pay the price.

Everybody is ignorant, only on different subjects.

Everybody is ignorant, only on different subjects.

There are three schoolmasters for everybody that will employ them - the senses, intelligent companions, and books.

There are three schoolmasters for everybody that will employ them - the senses, intelligent companions, and books.

A little learning is a dangerous thing; Drink deep, or taste not the Pierian spring.

A little learning is a dangerous thing; Drink deep, or taste not the Pierian spring.

In mathematics he was greater
Than Tycho Brahe, or Erra Pater;
For he, by geometric scale,
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In mathematics he was greater
Than Tycho Brahe, or Erra Pater;
For he, by geometric scale,
Could take the size of pots of ale.