To Perceive Is To Suffer.

Shame Is An Ornament To The Young; A Disgrace To The Old.

The So-called Pythagoreans, Who Were The First To Take Up Mathematics, Not Only Advanced This Subject, But Saturated With It, They Fancied That The Principles Of Mathematics Were The Principles Of All Things.

The More You Know, The More You Know You Don't Know.

To Thales The Primary Question Was Not What Do We Know, But How Do We Know It.

The Avarice Of Mankind Is Insatiable; At One Time Two Obols Was Pay Enough; But Now, When This Sum Has Become Customary, Men Always Want More And More Without End.