Top 2 Quotes & Sayings by David Harley

Explore popular quotes and sayings by an author David Harley.
Last updated on December 22, 2024.
David Harley

David Harley is an IT security researcher, author/editor and consultant living in the United Kingdom, known for his books on and research into malware, Mac security, anti-malware product testing and management of email abuse.

Author | Born: 1949
In order to achieve something great, you'll have to sacrifice something great. — © David Harley
In order to achieve something great, you'll have to sacrifice something great.
Realism is for pessimists. An optimist creates his own reality.
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