All delays are dangerous in war.

John Dryden (1631-1701): Tyrannic Love. Act i. Sc. 1.

Delays have dangerous ends.

William Shakespeare (1564-1616): King Henry VI. Part I. Act iii. Sc. 2.

A little learning is a dangerous thing;

Drink deep, or taste not the Pierian spring:

There shallow draughts intoxicate the brain,

And drinking largely sobers us again.

Alexander Pope (1688-1744): Essay on Criticism. Part ii. Line 15.

Thus ornament is but the guiled shore

To a most dangerous sea.

William Shakespeare (1564-1616): The Merchant of Venice. Act iii. Sc. 2.

Though I am not splenitive and rash,

Yet have I something in me dangerous.

William Shakespeare (1564-1616): Hamlet. Act v. Sc. 1.

Let me have men about me that are fat,

Sleek-headed men, and such as sleep o' nights:

Yond Cassius has a lean and hungry look;

He thinks too much: such men are dangerous.

William Shakespeare (1564-1616): Julius Caesar. Act i. Sc. 2.