According to Osho, no philosopher has influenced him—“influence” is spiritual slavery. He speaks only from his own experience and authority. Yet he deeply loves a few: above all Socrates, for uncompromising devotion to truth; also Lao Tzu, for wordless wisdom; Gautam Buddha, for radical rebellion; and Heraclitus, for insight into ceaseless change.
No one shaped him, but he most loves Socrates and also appreciates Lao Tzu, Buddha, and Heraclitus, while speaking only from his own experience.