All that we "know" is what registers on our brains, so what you perceive (your individual reality-tunnel) is made up of nothing but thoughts—as Sir Humphrey Davy noted when self-experimenting with nitrous oxide in 1819, and as Buddha noticed by sitting alone until all his social imprints atrophied and dropped away.

Only the madman is absolutely sure.

The Right's view of government and the Left's view of big business are both correct.

If you want to be happy, practise it every day

There are periods of history when the visions of madmen and dope fiends are a better guide to reality than the common-sense interpretation of data available to the so-called normal mind. This is one such period, if you haven't noticed already.

I look forward without dogmatic optimism but without dread.

Belief Systems contradict both science and ordinary "common sense." B.S. contradicts science, because it claims certitude and science can never achieve certitude: it can only say, "This model"- or theory, or interpretation of the data- "fits more of the facts known at this date than any rival model." We can never know if the model will fit the facts that might come to light in the next millennium or even in the next week.