“And I can tell you as a friend that sustainable prosperity in the 21st century depends upon education, health care, and environmental protection. But it also depends on the free and open exchange of ideas. If you can’t access information online, if you cannot be exposed to different points of view, you will not reach your full potential. And over time, the youth will lose hope.”

Source: Cosmos

Source: As quoted in A Dictionary of Thoughts : Being a Cyclopedia of Laconic Quotations from the Best Authors of the World, both Ancient and Modern (1908) by Tyron Edwards, p. 290

1960s, Freedom From The Known (1969)
Context: You cannot depend upon anybody. There is no guide, no teacher, no authority. There is only you — your relationship with others and with the world — there is nothing else. When you realize this, it either brings great despair, from which comes cynicism and bitterness, or, in facing the fact that you and nobody else is responsible for the world and for yourself, for what you think, what you feel, how you act, all self-pity goes. Normally we thrive on blaming others, which is a form of self-pity.

Variant: I can choose either to be a victim of the world or an adventurer in search of treasure. It's all a question of how I view my life.
Source: Eleven Minutes (2003), p. 37.

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 241.

His opinion on the loyalty of Zionists to the United States
Willard Hotel speech (1961)

Psychomagic: The Transformative Power of Shamanic Psychotherapy (2010)