Abdus Salam was a Pakistani theoretical physicist whose lifelong work in theoretical particle physics yielded fundamental insights. Driven by a profound faith, he sought connections between science and spirituality, believing that understanding nature's laws was a manifestation of divine creation. His tireless efforts led to the establishment of the International Centre for Theoretical Physics in Trieste, providing an inspiring environment for young scientists from developing nations. Salam left an indelible mark not only on physics but also on fostering scientific advancement globally.
The latest edition of ?Ideals and Realities? includes some of the most recent talks given by Professor Abdus Salam. They replace a few essays which were published in the second edition. An attempt has also been made to update some of the figures rendered absolete with the passage of time.